Matter Flashcards
1
Q
smallest unit in an atom (protons, neutrons, and electrons.)
We can only change the numbers of electrons(-)
A
Element
2
Q
2 or more of the same atom bonded by a chemical bond which stores chemical energy.
A
Molecule
3
Q
2 or more atoms of different elements.
A
Compound
4
Q
2 or more substances compounds, molecules and atoms
A
Mixture
5
Q
Homogeneous
A
2 or more bonded atoms of the same element.
6
Q
Heterogeneous
A
2 or more bonded atoms of the same element.
7
Q
Pure
A
all the same atoms. Ex. Carbon.
8
Q
Exothermic reaction
A
is when we take energy out and slow particles down going from gas to liquid to solid.
9
Q
Endothermic reaction
A
is when we speed particles up and give energy and the state goes from solid to liquid to gas.
