9.3 Flashcards

Created by mrswallin 

Upgrade to
remove ads

18 terms

Chemical change

Change in matter that produces a new substance with different properties from the original

Compound

Chemical combination of two or more elements

Ex: Rust

Chemical formula

Way of using letters and numbers to show how much of each element is in a substance

Covalent bond

When two atoms SHARE ELECTRONS

Ionic bond

When one atom "STEALS" an ELECTRON from another atom

Ex: Salt

Reactants

Original Substances in a chemical reaction (behind arrow)

Products

New substances formed in a chemical reaction (in front of arrow)

Synthesis reaction

2 elements or compounds JOIN TOGETHER to make a new compound

A + B --> AB

Decomposition Reaction

A compound BREAKS APART into simpler substances

AB --> A + B

Replacement Reaction

One element REPLACES another element in a compound

BX + A --> AX + B

Chemical property

Way of describing a substance by how it reacts chemically to other substances

Acid

pH less than 7; sour, corrosive, burns skin, wears away metal

Grapefruits, lemons, battery acid, vinegar

Acids

Base

pH greater than 7; bitter, usually poisonous, dissolves hair, wool, and grease

Drain cleaner, shampoo, bathtub cleaner

Bases

ENDOthermic

Chemical reactions that ABSORB ENERGY

EXOthermic

Chemical reactions that GIVE OFF HEAT

Hydrogen and Oxygen

2 atoms (elements) that make up a molecule of water

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set