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Physical Science Test 1
Test Description: 1st Test
Instructions: Answer all questions to get your test result.
1) Which of these elements has the smallest atomic radius?
A
Sodium (Na)
B
Oxygen (O)
C
Sulfur (S)
D
Beryllium (Be)
2) An atom contains 70 protons, 70 electrons, and 99 neutrons. What is the mass number?
A
169
B
239
C
70
D
140
3) Which of the following particles has a positive one charge?
A
Alpha
B
Neutron
C
Electron
D
Proton
4) According to the periodic table, Na will most likely react with elements in which of these groups?
A
1
B
18
C
17
D
3
5) Which element is a noble gas?
A
Fluorine (F)
B
Xenon (Xe)
C
Nitrogen (N)
D
Hydrogen (H)
6) When copper reacts with oxygen in the air, a color change takes place, and the metal changes color from reddish brown to green. What type of change occurs to produce this color change?
A
Chemical change
B
Dissolving
C
Physical change
D
Conductivity
7) Which of the following is true for an earthquake wave, but not for an electromagnetic wave?
A
It can travel only in a vacuum.
B
It does not require matter to transfer energy.
C
It does not transfer energy
D
It requires matter to transfer energy.
8) Why do atoms of elements have neutral charges?
A
The number of neutrons and the number of electrons are equal.
B
The number of protons and the number of neutrons are equal.
C
The number of protons and the number of electrons are equal.
D
.All atoms contain neutrons which have no charge
9) Which of the following properties of atoms can be used to identify an atom?
A
Its number of valence electrons
B
Its combined number of protons and neutrons
C
Its number of protons
D
Its number of neutrons
10) The molecules in a sample of matter move independently of one another. The substance takes the shape of its container. When the substance is moved from one container to another, its shape changes, but its volume remains the same. What is it?
A
Liquid
B
Gas
C
Solid
D
Plasma
11) Which property of matter is determined by measuring the pull of gravity on a sample of matter?
A
Acceleration
B
Mass
C
Volume
D
Weight
12) In which of the following media would you expect sound waves not to travel?
A
Gas
B
Vacuum
C
Liquid
D
Solid
13) Which of the following subatomic particles contributes significantly to the mass of an atom but does not contribute to its electrical charge?
A
Proton
B
Neutron
C
Electron
D
Quarks
14) Which of the following examples is an example of a physical change?
A
. Formation of silver sulfide when silver reacts with sulfur in the air
B
Vinegar and baking soda combining to form a salt and water
C
Condensation of water vapor on the outside of a cold can of soda
D
Burning of methane gas produces water and carbon dioxide
15) Which of the following is NOT an example of an electromagnetic wave?
A
Radio waves
B
Ultraviolet waves
C
Sound waves
D
Gamma rays
16) Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain?
A
4
B
3
C
2
D
1
17) What phase change occurs when a solid changes directly into a gas?
A
Evaporation
B
Melting
C
Freezing
D
Sublimation
18) What type of arrangement and motion do particles in a liquid have?
A
Particles in liquid are not in contact with one another and are moving at extreme speeds.
B
Particles in liquid are closely packed together and vibrating.
C
Particles in liquid are not in contact with each other and are moving very quickly.
D
Particles in liquid are in contact with each other, but they are able to slip past one another.
19) Materials that prevent heat flow are
A
Conductors
B
Insulators
C
Usually metals
D
Radiators
20) What happens to the number of energy levels as you travel from the top to bottom in a group on the periodic table?
A
The number of energy levels is random as you go down a group.
B
The number of energy levels increases.
C
The number of energy levels stays the same
D
The number of energy levels decreases.
*select an answer for all questions
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