Welcome to StudyStack, where users create FlashCards and share them with others. Click on the large flashcard to flip it over. Then click the green, red, or yellow box to move the current card to that box. Below the flashcards are blue buttons for other activities that you can try to study the same information.
Reset Password Free Sign Up

Free flashcards for serious fun studying. Create your own or use sets shared by other students and teachers.

Remove Ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


science cards

Chemistry The study of the property of matter changes
Element A substance that cannot be broken down into any other substances by chemical or physical means .
Compound A substance made of two or more elements chemically combined in a specific ration, or proportion .
Mixture Made from two or more pure substances - elements , compounds , or both.
Solution well-mixed mixture
Physical Change A change that alters the form or appearance of a material but does not make the material into another substance is called a physical change .
Chemical Change A change in matter that produces new substances
Precipitate A solid that forms from solution during a chemical reaction
Atom The smallest particle of an element
Molecule Combination of two or more atoms
Chemical Bond Force that holds atoms together .
Chemical Equation Shorter , easier way to show chemical reactions , using symbols instead of words .
Symbol Most elements are represented by a one-letter or two-letter symbol
Chemical Formula Shows the ratio of elements in the compound .
Subscript Shows the number of atoms of an element in a molecule
Reactants Materials that you have at the beginning of a chemical reaction
Conservation of Matter Principle stating that matter is not created or destroyed during a chemical reaction .
Coefficient Number in front of a chemical formula in the equation .
Synthesis When two or more substances combine to make a more complex substance .
Decomposition Breaks down compounds into smaller products
Replacement Reaction Reaction in which one element replaces another in a compound or in which two elements in different compounds trade places .
Exothermic Reaction Reaction that releases energy in the form of heat
Endothermic Reaction A reaction that absorbs energy .
Activation Energy Minimum amount of energy that has to be added to start a reaction .
Concentration Amount of one material in a given volume of another material .
Catalyst Material that increases the rate of a reaction by lowering the activation energy .
Enzymes Provide a surface on which reactions take place
Inhibitor Material used to decrease the rate of a reaction .
Combustion Rapid reaction between oxygen and a substance called a fuel
Fuel Material that releases energy when it burns
Created by: Thatcrazyasian

bad sites Copyright ©2001-2015  StudyStack LLC   All rights reserved.