chemical reactions Flashcards
In a chemical reaction are atoms created or destroyed
No because the number is the same on the reactant side and the product side.
If you keep putting in 1 chemical will the reaction continue to happen.
no because the other chemical will run out and you need more than 1 chemical to react
what is 1 piece of evidence that there is a chemical reaction
production of gas
formation of precipitate
color change
temperature change
what is a chemical reaction
The molecules in the reaction interact and reform to create a new substance
what is a reactant?
The substance that you start with (on the left side of the equation)
product
What you end up with. Comes from the reactants
what is qualitative
Relating something by the quality
what is quantitative?
to relate something on how much you have
what are properties
characteristics of a substance
what is a phase change
a change of substance from liquid to solid
what is matter
physical substances that occupy space
what is mass
a quantity of matter
what is volume
the amount of space something takes up
E=?
Ur mom
what is a physical change
the molecules move around to create a different appearance
