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Atomic Structure And States Of Matter
Test Description: Recognize that all matter consists of atoms. Compare the particle arrangement and type of particle motion associated with different states of matter.
Instructions: Answer all questions to get your test result.
1) Which of these best describes what must happen to the particles in water before it can change from one state to another?
A
The particles must gain or lose energy.
B
The number of particles must decrease.
C
The particles must lose a hydrogen atom.
D
The number of particles must increase.
2) Particles in what state of matter can spread in all directions to fill the volume of the container that holds them?
A
liquid
B
solid
C
gas
D
molecule
3) What determines a material’s state of matter?
A
the surface tension of the particles
B
the arrangement of the particles into a cube
C
the motion of particles and the strength of attraction between them
D
viscosity and density of the particles
4) What happens to the molecules in a lump of butter as the butter melts?
A
The molecules pack together more closely and move faster.
B
The molecules spread farther apart and move slower.
C
The molecules spread farther apart and move faster.
D
The molecules pack together more closely and move slower.
5) What is the atomic mass of an atom that contains 11 protons, 13 neutrons, and 11electrons?
A
24
B
11
C
13
D
22
6) Sodium is an element found in table salt. It contains 11 protons and 12 neutrons. How many electrons are found in a neutral atom of sodium?
A
23
B
12
C
11
D
1
7) What is the atomic number of an atom that contains 26 protons, 29 neutrons, and 26 electrons?
A
81
B
29
C
52
D
26
8) What is the charge of an Ion that has 38 protons and 43 electrons?
A
-81
B
+81
C
+38
D
-5
9) Which of these describes the motion and arrangement of particles in a solid?
A
Particles vibrate and are packed together.
B
Particles move quickly and are not in contact with each other.
C
Particles slip past one another whiling maintaining some contact.
D
Particles are superheated and separate into ions and free electrons.
10) Chlorine is an element found in table salt. Its atomic mass is 35 and it contains 17 protons. How many neutrons are found in a neutral atom of chlorine?
A
18
B
1
C
35
D
17
*select an answer for all questions
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