Matter is Made up of Atoms
Practice Test
1.
The two routes for nitrogen fixation in nature are __________.
a.
lightning and ozone formation
b.
bacteria and the water cycle
c.
lightning and ultraviolet radiation
d.
bacteria and lightning
2.
The capacity to do work is called ________.
a.
volume
b.
mass
c.
energy
d.
density
3.
What properties did Rutherford use in the design of the gold foil experiment?
a.
alpha particle's positive charge and electron's negative charge
b.
alpha particle's negative charge and gold foil's positive charge
c.
alpha particle's negative charge and random distribution of protons
d.
positively charged electrons distributed in a uniform negative charge
4.
When water reacts with baking powder, _______ gas is produced.
a.
ammonia
b.
helium
c.
carbon dioxide
d.
nitrogen
5.
Greek philosophers thought these four elements formed all matter.
a.
hydrogen, oxygen, carbon, nitrogen
b.
earth, air, fire, water
c.
carbon, phosphorus, calcium, oxygen
d.
earth, sea, air, plasma
6.
This chemical symbol represents a metallic element that is a liquid at room temperature.
a.
Hg
b.
H
c.
Pb
d.
H
2
O
7.
Which of the following is a chemical element?
a.
gold
b.
sand
c.
sucrose
d.
water
8.
What element makes up approximately 65% of your body by mass?
a.
calcium
b.
oxygen
c.
nitrogen
d.
hydrogen
9.
This scientist compared the the motions of electrons in atoms to the motions of planets orbiting the sun.
a.
Thomson
b.
Bohr
c.
Rutherford
d.
Priestly
10.
A magnesium atom has _______ valence electron.
a.
four
b.
five
c.
two
d.
three
11.
An object has a mass of 20.0 g and a volume of 10.0 mL. What is its density?
a.
20.0 g
b.
10.0 mL
c.
2.00 g/mL
d.
0.500 g/mL
12.
What is the wavelength of a radio wave having a frequency of 3.75 x 10 7 Hz?
a.
0.8 m
b.
.08 m
c.
80 m
d.
8.0 m
13.
A substance being dissolved is called ____________.
a.
an aqueous solvent
b.
a solvent
c.
a solute
d.
a solution
14.
Which of the following is NOT the formula for an element?
a.
Cu
b.
Ho
c.
B
d.
CO
15.
Which of the following is not a compound?
a.
salt water
b.
carbon dioxide
c.
water
d.
butane
16.
Crushing a substance ____________.
a.
is a physical change
b.
is a chemical change
c.
decreases its melting point
d.
increases its density
17.
This color of light has the highest frequency of the visible electomagnetic spectrum.
a.
blue
b.
violet
c.
green
d.
red
18.
_________ is credited with formulating the modern atomic theory of matter, which has remained essentially intact up to the present time.
a.
Archimedes
b.
Lavoisier
c.
Dalton
d.
Proust
19.
The nucleus of this atom contains nine protons and nine neutrons.
a.
oxygen-18
b.
neon-18
c.
fluorine-18
d.
nitrogen-19
20.
An explanation based on many observations and supported by the results of many experiments is called a _____________.
a.
fact
b.
hypothesis
c.
theory
d.
scientific law
