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WorksheetsUnit 2 Review
Total questions: 20
Worksheet time: 11mins
Name
Class
Date
1.
Which fundamental law of chemistry is on display?
a)
Law of Conservation of Mass
b)
Law of Multiple Proportions
c)
Law of Definite Proportions
d)
Newton's Laws
2.
According to Dalton's Atomic Theory, which particle diagram best represents a compound?
a)
A
b)
B
c)
C
d)
D
3.
What is referred to as the dense center of the atom housing the protons & neutrons?
a)
Electron Cloud
b)
Orbit
c)
Nucleus
d)
Orbital
4.
What is the atomic number of this neutral atom?
a)
8
b)
12
c)
18
d)
17
5.
Which element is being displayed?
a)
Carbon
b)
Oxygen
c)
Nitrogen
d)
Hydrogen
6.
What is the mass number of this atom?
a)
6
b)
12
c)
16
d)
10
7.
How many neutrons would exist in the isotope O-18?
a)
6
b)
12
c)
18
d)
10
8.
In a chemical reaction, oxygen must gain or lose how many electrons forming what ionic charge?
a)
Gain 4 (-4)
b)
Lose 4 (+4)
c)
Gain 2 (-2)
d)
Lose 2 (+2)
9.
Align the chemist with their respective discovery of subatomic particles of the atom.
a)
Rutherford (-) & Thomson (+)
b)
Rutherford (+) & Thomson (-)
10.
What is the mass of 2 moles of nitrogen?
a)
7 grams
b)
14 grams
c)
21 grams
d)
28 grams
11.
How many moles are in 56 grams of nitrogen?
a)
4 moles
b)
8 moles
c)
2 moles
d)
6 moles
12.
How many atoms are in 42 grams of nitrogen?
a)
6.02 x 10^23
b)
3.01 x 10^23
c)
1.81 x 10^24
d)
1.2 x 10^24
13.
Which type of nuclear decay reaction is taking place?
a)
Alpha
b)
Beta
c)
Gamma
14.
Mercury-197 has a 2 day half-life. If 200g is ordered & takes 6 days to arrive, how much arrives?
a)
100g
b)
50g
c)
25g
d)
12.5g
15.
Which diagram displays electron absorption?
a)
Left
b)
Right
16.
Which is the correct orbital notation for boron? Numbered from top to bottom.
a)
1
b)
2
c)
3
d)
4
17.
Which is the correct electron dot notation for neon?
a)
5
b)
6
c)
7
d)
8
18.
Which block & groups are represented as purple on the periodic table?
a)
P (Nonmetals)
b)
S (Metals)
c)
D (Transition Metals)
d)
F (Lanthanides & Actinides)
19.
Which element has the smallest atomic radius & highest electronegativity?
a)
Flourine
b)
Argon
c)
Hydrogen
d)
Sodium
20.
S-Block elements tend to (lose/gain) their valence e- to become (cations/anions).
a)
gain/cations
b)
gain/anions
c)
lose/cations
d)
lose/anions
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