Chemistry unit final Flashcards
1
Q
List all the diatomic elements when by themselves:
A
H2, I2, O2, N2, Cl2, F2, Br2, S8, P4
2
Q
what is NH3
A
ammonia
3
Q
what is O3
A
ozone
4
Q
what is CH4
A
Methane
5
Q
what is C6H12O6?
A
Glucose
6
Q
what is CH3OH
A
ethanol
6
Q
what is CH3COOH?
A
acetic acid
7
Q
physical change?
A
occurs without changing its composition, melting, evaporation
8
Q
chemical reaction?
A
results in the formation of a new substance, lighting a match, frying an egg, rust forming on a car or nail
9
Q
how do you get the neutrons of an element?
A
mass - number of protons = neutrons
10
Q
what direction are groups?
A
vertical
11
Q
what direction are periods?
A
horizontal
