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LIST OF METALS
Most elements on the periodic table are metals. They are grouped together in the middle to the left-hand side of the periodic table. The metals consist of the alkali metals, alkaline earths, transition metals, lanthanides, and actinides.. Here is a list of metals, their location on the periodic table, their properties, and uses. WHAT IS OXIDATION? DEFINITION AND EXAMPLESSEE MORE ON SCIENCENOTES.ORG WHAT IS A CONTROL VARIABLE? DEFINITION AND EXAMPLESSEE MORE ONSCIENCENOTES.ORG
DOUBLE REPLACEMENT REACTION DEFINITION AND EXAMPLESSEE MORE ONSCIENCENOTES.ORG
WHAT IS A PROTON?
WHAT DOES PERCENT CHANCE OF RAIN MEAN IN A WEATHER FORECAST? PoP = 1 x 0.6. PoP = 0.6 or 60% chance of precipitation. If the forecaster is only 75% sure it will rain (C = 0.75) and if it does, only 80% of the forecast area will see that rain (A = 0.80), then. PoP = C x A. PoP = 0.75 x 0.80. PoP = 0.60 or 60% chance of precipitation. Both of these examples give the same value for the chance of THE VAN'T HOFF FACTOR ADD ACID TO WATER OR WATER TO ACID? SAFELY DILUTING ACIDS Diluting acid with water is exothermic, so it’s easier to boil and splash water added to acid than acid added to water because water has a high heat capacity and can absorb a lot of heat. Also, some strong acids have a higher specific gravity or density than water. So, if you put water on top of acid, the heat that’s generated is at the DOES BOILING WATER KEEP GETTING HOTTER? You can crank the heat as high as you like. The water may boil more vigorously and convert into steam more quickly, but it won’t get hotter. In fact, at the microscopic level, there may be cooler regions of boiling water. When vapor bubbles form near a heat source, like at the bottom of a pot, the gas bubbles insulate the water from the heat. PRINTABLE PROTRACTORS Click the image to open the full-sized image. Alternatively, the PDF files provide protractors with clearer text and sharper lines. The first is the typical 180° protractor with a six-inch ruler along the bottom. Download the PDF of this protractor. The second is a round protractor for the full 360° experience. Download the PDF of thisLIST OF METALS
Most elements on the periodic table are metals. They are grouped together in the middle to the left-hand side of the periodic table. The metals consist of the alkali metals, alkaline earths, transition metals, lanthanides, and actinides.. Here is a list of metals, their location on the periodic table, their properties, and uses. WHAT IS OXIDATION? DEFINITION AND EXAMPLESSEE MORE ON SCIENCENOTES.ORG WHAT IS A CONTROL VARIABLE? DEFINITION AND EXAMPLESSEE MORE ONSCIENCENOTES.ORG
DOUBLE REPLACEMENT REACTION DEFINITION AND EXAMPLESSEE MORE ONSCIENCENOTES.ORG
WHAT IS A PROTON?
WHAT DOES PERCENT CHANCE OF RAIN MEAN IN A WEATHER FORECAST? PoP = 1 x 0.6. PoP = 0.6 or 60% chance of precipitation. If the forecaster is only 75% sure it will rain (C = 0.75) and if it does, only 80% of the forecast area will see that rain (A = 0.80), then. PoP = C x A. PoP = 0.75 x 0.80. PoP = 0.60 or 60% chance of precipitation. Both of these examples give the same value for the chance of THE VAN'T HOFF FACTOR ADD ACID TO WATER OR WATER TO ACID? SAFELY DILUTING ACIDS Diluting acid with water is exothermic, so it’s easier to boil and splash water added to acid than acid added to water because water has a high heat capacity and can absorb a lot of heat. Also, some strong acids have a higher specific gravity or density than water. So, if you put water on top of acid, the heat that’s generated is at the DOES BOILING WATER KEEP GETTING HOTTER? You can crank the heat as high as you like. The water may boil more vigorously and convert into steam more quickly, but it won’t get hotter. In fact, at the microscopic level, there may be cooler regions of boiling water. When vapor bubbles form near a heat source, like at the bottom of a pot, the gas bubbles insulate the water from the heat. FREE PRINTABLE PERIODIC TABLES (PDF AND PNG) 118 Element Vibrant Periodic Table. This 118 element periodic table is a 1920×1080 HD wallpaper. It features our favorite color scheme of all the tables we’ve made. It includes element names, symbols, groups, atomic numbers, and atomic masses. It’s our favorite colorscheme.
EXAMPLES OF CHEMICAL REACTIONS IN EVERYDAY LIFE Here are some broad examples of chemical reactions in daily life: Combustion. Photosynthesis. Aerobic cellular respiration. Anaerobic respiration (including fermentation) Oxidation (including rust) Metathesis reactions (such as baking soda and vinegar) Electrochemistry (including chemical batteries) Digestion. WHAT IS A CONTROL VARIABLE? DEFINITION AND EXAMPLES Control Variable Examples. Anything you can measure or control that is not the independent variable or dependent variable has potential to be a control variable. Examples of common control variables include: Duration of the experiment. Size and composition of containers.Temperature.
DNA VS RNA - SIMILARITIES AND DIFFERENCES - SCIENCE NOTES Usually, DNA is a double-stranded molecule that forms a double helix, while RNA is a single stranded molecule. Rarely, DNA takes other forms, such as triple-strand DNA and quadraplex DNA. Similarly, double-stranded RNA (dsRNA) occurs in some viruses. DNA uses the bases adenine, thymine, guanine, and cytosine. RNA uses the bases adenine,uracil
WHAT IS A PROTON?
Proton Definition. A proton is a subatomic particle with a mass defined as 1 and a charge of +1 (positive charge). A proton is indicated by either the symbol p or p+. The nucleus of every atom contains protons. The number of protons of an atom of an element is its atomic number. Because both protons and neutrons are found in theatomic nucleus
SOURCES OF ERROR IN SCIENCE EXPERIMENTS Learn why all science experiments have error, how to calculate it, and the sources and types of errors you should report. SINGLE REPLACEMENT REACTION DEFINITION AND EXAMPLES A single replacement reaction is a chemical reaction where one element replaces another in a compound. It is also known as a single displacement reaction. The general form of a single replacement reaction chemical equation is: A + BC → B + AC. Single replacement reactions occur when A is more reactive than B or product AC is morestable than BC.
LIST OF THINGS THAT GLOW UNDER BLACK LIGHT A black light is a type of light bulb that emits mostly ultraviolet radiation. Although most bulbs also give off a faint violet glow, the majority of the light is outside the visible range. This energetic radiation excites molecules, often producing fluorescence or phosphorescence.A visible photon is released when a molecule loses the absorbed energy, making the substance appear to glow in theWHY MILK CURDLES
Why Milk Curdles. Milk curdles when its pH drops, allowing protein molecules in milk to clump together. (Tess Watson) Curdled milk is what you get when lumps form in smooth milk. Although the clumps form in spoiled milk, the chemical reaction that causes curdling also occurs in fresh milk, under the right conditions. 5 WAYS TO MAKE A VOLCANO liquid dishwashing detergent. red or orange food coloring. baking soda. vinegar. Pour warm water into the volcano until it is 1/2 to 3/4 of the way full. Add several drops of food coloring. Add a squirt of detergent. This helps the ‘lava’ foam up and flow. Add a couple of spoonfuls of baking soda. PRINTABLE PROTRACTORS Click the image to open the full-sized image. Alternatively, the PDF files provide protractors with clearer text and sharper lines. The first is the typical 180° protractor with a six-inch ruler along the bottom. Download the PDF of this protractor. The second is a round protractor for the full 360° experience. Download the PDF of thisLIST OF METALS
Most elements on the periodic table are metals. They are grouped together in the middle to the left-hand side of the periodic table. The metals consist of the alkali metals, alkaline earths, transition metals, lanthanides, and actinides.. Here is a list of metals, their location on the periodic table, their properties, and uses. SOURCES OF ERROR IN SCIENCE EXPERIMENTS Learn why all science experiments have error, how to calculate it, and the sources and types of errors you should report.WHAT IS A PROTON?
LIST OF THINGS THAT GLOW UNDER BLACK LIGHT A black light is a type of light bulb that emits mostly ultraviolet radiation. Although most bulbs also give off a faint violet glow, the majority of the light is outside the visible range. This energetic radiation excites molecules, often producing fluorescence or phosphorescence.A visible photon is released when a molecule loses the absorbed energy, making the substance appear to glow in the WHAT DOES PERCENT CHANCE OF RAIN MEAN IN A WEATHER FORECAST? PoP = 1 x 0.6. PoP = 0.6 or 60% chance of precipitation. If the forecaster is only 75% sure it will rain (C = 0.75) and if it does, only 80% of the forecast area will see that rain (A = 0.80), then. PoP = C x A. PoP = 0.75 x 0.80. PoP = 0.60 or 60% chance of precipitation. Both of these examples give the same value for the chance of ADD ACID TO WATER OR WATER TO ACID? SAFELY DILUTING ACIDS Diluting acid with water is exothermic, so it’s easier to boil and splash water added to acid than acid added to water because water has a high heat capacity and can absorb a lot of heat. Also, some strong acids have a higher specific gravity or density than water. So, if you put water on top of acid, the heat that’s generated is at the HOW MANY ZEROS IN A MILLION, BILLION, AND TRILLION?SEE MORE ONSCIENCENOTES.ORG
DOES BOILING WATER KEEP GETTING HOTTER? You can crank the heat as high as you like. The water may boil more vigorously and convert into steam more quickly, but it won’t get hotter. In fact, at the microscopic level, there may be cooler regions of boiling water. When vapor bubbles form near a heat source, like at the bottom of a pot, the gas bubbles insulate the water from the heat. 5 WAYS TO MAKE A VOLCANO liquid dishwashing detergent. red or orange food coloring. baking soda. vinegar. Pour warm water into the volcano until it is 1/2 to 3/4 of the way full. Add several drops of food coloring. Add a squirt of detergent. This helps the ‘lava’ foam up and flow. Add a couple of spoonfuls of baking soda. PRINTABLE PROTRACTORS Click the image to open the full-sized image. Alternatively, the PDF files provide protractors with clearer text and sharper lines. The first is the typical 180° protractor with a six-inch ruler along the bottom. Download the PDF of this protractor. The second is a round protractor for the full 360° experience. Download the PDF of thisLIST OF METALS
Most elements on the periodic table are metals. They are grouped together in the middle to the left-hand side of the periodic table. The metals consist of the alkali metals, alkaline earths, transition metals, lanthanides, and actinides.. Here is a list of metals, their location on the periodic table, their properties, and uses. SOURCES OF ERROR IN SCIENCE EXPERIMENTS Learn why all science experiments have error, how to calculate it, and the sources and types of errors you should report.WHAT IS A PROTON?
LIST OF THINGS THAT GLOW UNDER BLACK LIGHT A black light is a type of light bulb that emits mostly ultraviolet radiation. Although most bulbs also give off a faint violet glow, the majority of the light is outside the visible range. This energetic radiation excites molecules, often producing fluorescence or phosphorescence.A visible photon is released when a molecule loses the absorbed energy, making the substance appear to glow in the WHAT DOES PERCENT CHANCE OF RAIN MEAN IN A WEATHER FORECAST? PoP = 1 x 0.6. PoP = 0.6 or 60% chance of precipitation. If the forecaster is only 75% sure it will rain (C = 0.75) and if it does, only 80% of the forecast area will see that rain (A = 0.80), then. PoP = C x A. PoP = 0.75 x 0.80. PoP = 0.60 or 60% chance of precipitation. Both of these examples give the same value for the chance of ADD ACID TO WATER OR WATER TO ACID? SAFELY DILUTING ACIDS Diluting acid with water is exothermic, so it’s easier to boil and splash water added to acid than acid added to water because water has a high heat capacity and can absorb a lot of heat. Also, some strong acids have a higher specific gravity or density than water. So, if you put water on top of acid, the heat that’s generated is at the HOW MANY ZEROS IN A MILLION, BILLION, AND TRILLION?SEE MORE ONSCIENCENOTES.ORG
DOES BOILING WATER KEEP GETTING HOTTER? You can crank the heat as high as you like. The water may boil more vigorously and convert into steam more quickly, but it won’t get hotter. In fact, at the microscopic level, there may be cooler regions of boiling water. When vapor bubbles form near a heat source, like at the bottom of a pot, the gas bubbles insulate the water from the heat. 5 WAYS TO MAKE A VOLCANO liquid dishwashing detergent. red or orange food coloring. baking soda. vinegar. Pour warm water into the volcano until it is 1/2 to 3/4 of the way full. Add several drops of food coloring. Add a squirt of detergent. This helps the ‘lava’ foam up and flow. Add a couple of spoonfuls of baking soda. FREE PRINTABLE PERIODIC TABLES (PDF AND PNG) 118 Element Vibrant Periodic Table. This 118 element periodic table is a 1920×1080 HD wallpaper. It features our favorite color scheme of all the tables we’ve made. It includes element names, symbols, groups, atomic numbers, and atomic masses. It’s our favorite colorscheme.
WHAT IS OXIDATION? DEFINITION AND EXAMPLES Oxidation Examples. A classic example of oxidation occurs between iron and oxygen in moist air, forming iron oxide or rust. The iron is said to have oxidized into rust. The chemical reaction is: 4 Fe + 3 O 2 + 6 H 2 O → 4 Fe (OH) 3 or 2Fe 2 O 3 ·6H 2 O. The iron metal is oxidized to form the iron oxide known as rust. Fe → Fe 2+ + 2 e−. LEARN THE PARTS OF AN ATOM Learn the Parts of an Atom. The three main parts of an atom are protons, neutrons, and electrons. (Halfdan) The atom is the basic building block of matter. Atoms combine to form pure elements, compounds, and complex forms like computers and phones. Atoms are the smallest particle of matter than cannot be further subdivided usingchemical means.
HOW MANY ZEROS IN A MILLION, BILLION, AND TRILLION? The two main naming systems are the short scale and the long scale. The United States uses the short scale, in which a billion is 1,000 million and is written as a one followed by nine zeros. The long scale is used in France and was previously used in the United Kingdom. In the long scale, a billion means one million million. WHAT ARE THE FIRST 20 ELEMENTS The atomic number is the number of protons in atoms of each element. In order of increasing atomic number, the first 20 elements and their symbols are: Hydrogen (H) Helium (He) Lithium (Li) Beryllium (Be)Boron (B)
ADD ACID TO WATER OR WATER TO ACID? SAFELY DILUTING ACIDS Diluting acid with water is exothermic, so it’s easier to boil and splash water added to acid than acid added to water because water has a high heat capacity and can absorb a lot of heat. Also, some strong acids have a higher specific gravity or density than water. So, if you put water on top of acid, the heat that’s generated is at the DOUBLE REPLACEMENT REACTION DEFINITION AND EXAMPLES The cations and anions of two compounds switch places to form two new products in a double replacement or double displacement reaction. A double replacement reaction is a type of chemical reaction where two reactants exchange ions to form two new products with the same type of chemical bonds. Usually, one of the products forms a precipitate. WHAT IS A CONTROL VARIABLE? DEFINITION AND EXAMPLES Control Variable Examples. Anything you can measure or control that is not the independent variable or dependent variable has potential to be a control variable. Examples of common control variables include: Duration of the experiment. Size and composition of containers.Temperature.
WHAT DOES PERCENT CHANCE OF RAIN MEAN IN A WEATHER FORECAST? PoP = 1 x 0.6. PoP = 0.6 or 60% chance of precipitation. If the forecaster is only 75% sure it will rain (C = 0.75) and if it does, only 80% of the forecast area will see that rain (A = 0.80), then. PoP = C x A. PoP = 0.75 x 0.80. PoP = 0.60 or 60% chance of precipitation. Both of these examples give the same value for the chance of 5 WAYS TO MAKE A VOLCANO liquid dishwashing detergent. red or orange food coloring. baking soda. vinegar. Pour warm water into the volcano until it is 1/2 to 3/4 of the way full. Add several drops of food coloring. Add a squirt of detergent. This helps the ‘lava’ foam up and flow. Add a couple of spoonfuls of baking soda.* Home
* Science Notes Posts * Contact Science Notes * About Science Notes * Todd Helmenstine Biography * Anne Helmenstine Biography* Periodic Tables
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HOW TO MAKE BLUE FIRE Learn how to make blue fire. Choose colorants that turn flames blueand fuels that ...
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SI BASE UNITS
Learn about the seven SI base units of measurement. Get their abbreviations and learn ...Read more »
HOW TO MAKE A CLOUD CHAMBER TO DETECT RADIATION It’s easy to make a cloud chamber to detect radiation. Here is howyou do it ...
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FREE PRINTABLE PERIODIC TABLES (PDF AND PNG) Find the perfect printable periodic table! This is a collection of free printable periodic tables in PDF file or PNG image format to save, print, and use.Read more »
HOW TO GROW CRYSTALS I’ve added a bunch of new crystal-growing projects for you. Instructions range from crystals grown with home chemicals to easy lab chemical crystals to try.Read more »
EXAMPLE PHYSICS PROBLEMS AND SOLUTIONS Here's a collection of example physics problems and solutions to help you tackle problems sets and understand concepts and how to work withformulas.
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------------------------- Welcome to the Science Notes and Projects site, where you’ll find experiments, projects, and notes for all scientific disciplines and educational levels. We write science articles and make all kinds of printable periodic tables and periodic table wallpapers. PERIODIC TABLE WITH 118 ELEMENT NAMES AND SYMBOLS Here’s the Science Notes periodic tablewith the
official names and data for all 118 elements. COMPREHENSIVE CHEMISTRY DICTIONARY Here’s a comprehensive chemistry dictionary.
Over time, we’re adding full articles for each term. HOW TO MAKE GLOWING JEWELRYHere’s a project
that
combines art and science to make rings that glow in the dark. These rings look like quartz or crystal in the light but glow brilliantly inthe dark.
LISTS OF THINGS THAT GLOW Here are two lists for you. One covers things that glow under black light (fluorescent or phosphorescent), while the other covers things that glow when the lights go out and it’s truly dark. Some items produce luminescence both ways: * Things That Glow in the Dark * Things That Glow Under Black Light ESSENTIAL CHEMISTRY CHARTS AND TABLES Sometimes it’s just easier to have a printout of important information. These tables are available as PDF files. You can save these and print them out at your convenience: * Alphabetical List of the Chemical Elements * Table of Important Constants * Rare Earth Elements * Valences of the Elements * Electron Configurations of the Elements * Understand Wedge and Dash Notation SCIENCE DEMONSTRATIONS AND PROJECTS Here are some fun science projects to try: * Different Ways To Make Slime * Extract Your Own DNA from Cheek Cells * Start a Fire Without a Match * Make Soap in a Test Tube * Make Fizzy Bath Bombs * See How an Emulsifier Works * Make a Crystal Undersea Garden * Grow Crystals on a StarfishSCIENCE JOKES
We’ve added a little humor with a collection of science and math jokes. Spend a little time laughing (or groaning) at the lighter side of science. You’re welcome to post a reply to tell your own sciencejoke!
Chemistry Jokes
Math Jokes
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Engineer Jokes
TRIGONOMETRY HELP AT SCIENCE NOTES Learn to love the triangle. Trigonometry is one of the scientist’s basic tools in their mathematics toolbox. Here are a couple of useful printable reference sheets with trig relationships, special triangles and trig identities. Got requests for trig or stats content? Let us know. We both have degrees in math. Right Triangles Trigonometry FunctionsSpecial Triangles
Trig Tables – SIN, COS and TAN values PDF Trig Identities Study Sheet PERIODIC TABLE TRENDS Metals, Metalloids and Nonmetals This periodic table shows the elements and locations of the metals, metalloids and nonmetals. It also lists the common properties of metals, metalloids and nonmetals. You can print out the table the same as any of the periodic tables on the site.List of Metals
This is a list of the elements considered to be the metal elements along with a periodic table highlighting these elements and theircommon properties.
List of Metalloids
This is a list of the elements considered to be the metalloid or semimetal elements. It also contains a periodic table highlighting the metalloids and their common properties.List of Nonmetals
This is a list of all the nonmetal elements, their location on the periodic table and the properties of a nonmetal.SCIENCE PROJECTS
Here are some new science projects, plus some old favorites: * Homemade Black Snake Fireworks * How To Crystallize a Real Rose * Make a Tabletop Green Fire Tornado * Rainbow Density Column * 5 Ways To Make a Chemical Volcano * Make Colored Soap Bubbles * 2 Ways To Make Green Fire HOW TO GROW CRYSTALS We’ve got a bunch crystal-growing projects for you. Instructions range from crystals grown with home chemicals to easy lab chemicalcrystals to try.
* Grow Sugar Crystals * Grow Purple Chrome Alum Crystals * Charcoal Crystal Garden * Grow a Crystal Geode * Grow Table Salt Crystals * What To Do If Crystals Won’t Grow -------------------------TOP POSTS & PAGES
* Free Printable Periodic Tables (PDF and PNG) * What Are the First 20 Elements - Names and Symbols * List of Electron Configurations of Elements * Examples of Chemical Reactions in Everyday Life* List of Metals
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