Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Unit 2

Chem. Equation Vocab. 8th Grade

TermDefinition
subscript A number written below and to the right of a chemical symbol that shows the number of atoms.
chemical formula A shorthand notation that uses chemical symbols and subscripts to represent the type and number of atoms in the smallest unit of the substance.
chemical reaction The process by which one or more substances change to produce one or more different substances.
chemical equation Chemical formulas and symbols written to represent an entire reaction.
coefficient A number placed in front of a chemical symbol or formula in order to balance the equation.
balanced chemical equation A symbolic representation of a chemical reaction in which both sides of the equation contain equivalent numbers of atoms of each element. The mass and the charge must be balanced on both sides of the reaction.
reactants Substances that take part in and are changed by a chemical reaction
products substances produced during a chemical reaction
Law of Conservation of Matter The mass of all reactants must equal the mass of all products. Matter is neither created nor destroyed.
physical change affects size, shape, state of matter, or color of a substance, but does not turn it into a new substance
chemical change one or more substances are changed into entirely new substances because their atoms are rearranged
element a pure substance made entirely of one type of atom
atom the smallest unit of an element
molecule 2 or more atoms bonded together by valence electrons
compound a pure substance made of 2 or more types of atoms bonded together by valence electrons
exothermic describes a chemical reaction that produces heat energy
endothermic describes a chemical reaction that absorbs heat energy
carbon the one element that is found in all organic compounds
valence electrons the electrons that are in the outermost energy level of an atom
evidence indication that an event has occurred
substance an element or compound that can only be separated or combined to make new substances by means of a chemical reaction
precipitate a solid that is deposited in a solution
Popular Chemistry sets
Review
Review
PT and counting atoms
Chapter 3 terms
Review
"5th Grade - Mixtures & Solutions - Terms & Definitions"
Structure of Atoms
Element Symbols
13 Polyatomic ions to memorize
Element Symbols
Ejercicos para ayudar a memorizar símbolos de principales elementos químicos
Periodic Table

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards