WorksheetsUnit 1 Chem Test Study
Total questions: 23
Worksheet time: 45mins
Name
Class
Date
1.
Which one is a compound?
a)
Co
b)
CO
c)
H
d)
H2
2.
Which one is an element?
a)
H2
b)
OH
c)
H2O
d)
Air (H2, H2O, N2, CO2)
3.
Cannot be separated into a simpler substance by chemical or physical means
a)
element
b)
compound
c)
mixture
4.
Can be broken apart through a physical change
a)
element
b)
compound
c)
mixture
5.
Can be broken apart through a chemical reaction
a)
element
b)
compound
c)
mixture
6.
What subatomic particles are located in the nucleus?
a)
protons & electrons
b)
protons & neutrons
c)
electrons & neutrons
d)
only protons
7.
Which subatomic particle is considerably smaller than the other two?
a)
proton
b)
neutron
c)
electron
8.
Which subatomic particle is negative?
a)
proton
b)
neutron
c)
electron
9.
Which subatomic particle has a zero charge?
a)
proton
b)
neutron
c)
electron
10.
How many neutrons in Boron?
a)
5
b)
6
c)
10
d)
11
11.
What would the charge be of the NUCLEUS ONLY of an atom with 3 protons, 4 neutrons, and 2 electrons?
a)
+3
b)
+7
c)
+1
d)
-1
12.
How many protons in Krypton?
a)
36
b)
48
c)
83
d)
84
13.
What is A pointing at?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
14.
Which subatomic particle determines an element's identity?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Valence electrons
15.
An ion has 3 protons, 4 neutrons, and 2 electrons. What element is it?
a)
Helium
b)
Lithium
c)
Beryillium
d)
Boron
16.
How many protons in an atom of Uranium?
a)
92
b)
146
c)
238
d)
50
17.
How many electrons will fill the second energy level in a Bohr model?
a)
2
b)
8
c)
6
d)
10
18.
An atom/ion has 10 protons, 10 neutrons, and 10 electrons. What is its overall (net) charge?
a)
+10
b)
0
c)
+20
d)
+1
19.
A NEUTRAL atom has the same number of -
a)
protons & neutrons
b)
protons & electrons
c)
neutrons & electrons
20.
Which scientist's model included the electrons orbiting the nucleus like planets orbit the sun?
a)
Thomson
b)
Bohr
c)
Rutherford
d)
Dalton
21.
Which scientist described the atom as a blueberry muffin, where the blueberries are negative electrons and the muffin is positive "stuff".
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
22.
Which model describes only a probability about where electrons may be?
a)
Dalton's Bowling Ball
b)
Thomson's Plum Pudding
c)
Rutherford's Peach Pit
d)
Schrodinger's Electron Cloud
23.
Which scientist that we studied first noted the atom is mostly empty space?
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
100 %
