Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
Compounds can be broken down into simpler substances by chemical mean, but elements cannot?
|
yes
|
|
chemical change
|
a change that produces matter with a different composition than the original matter
|
|
If the composition of a material is fixed, the material is a substance. if the composition of amaterial may vary, the material is a mixture
|
yes
|
|
chemists use chemical symbols to represent compounds and chemical formulas to represent elements
|
false swap the two
|
|
chemical symbol
|
a one or two lettered symbol for elements. first letter is uppercase and second is lowercase
|
|
chemical property
|
the ability of a substance to undergo a specific chemical change
|
|
during a chemical change, the composition of matter always changes
|
true
|
|
chemical reaction
|
one or more substances change into one or more new substances
|
|
reactant
|
a substance that present at the start of the reaction
|
|
product
|
a substance that is produced in the reaction
|
|
precipitate
|
a solid that forms and settles out of a liquid during a chemical reaction
|
|
law of conservation of mass
|
in a physical or chemical reaction, no mass is gained or lost
|