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Review PS511 And PS512
Test Description: Answer the questions and fill out the study guide.
Instructions: Answer all questions to get your test result.
1) There are slightly more than one-hundred elements known to exist. The smallest complete unit of an element that serves as the basic building block of matter is the
A
proton
B
nucleus
C
neutron
D
atom
2) What charge does the proton give to the nucleus?
A
Neither since the nucleus does not carry a charge, only atoms do
B
positve
C
negative
D
positive or negative depending of the number of electrons
3) If an atom were to lose a neutron that atom's ________________ would be affected. Choose the best answer.
A
Charge
B
Mass and charge
C
Mass
D
Mass and atomic stablilty
4) Which of the following is false regarding the structure of atoms?
A
Losing a proton affects only an atom's mass and charge
B
Atoms are naturally electrically neutral.
C
Most of the mass is in the nucleus.
D
The nucleus is a very small region of the atom
5) __________________ surround the nucleus in shells or clouds.
A
Electrons
B
Protons
C
Photons
D
Neutrons
6) A typical carbon atom has six protons, six neutrons, and six electrons. Which of these has the least amount of mass?
A
One proton
B
These masses are too tiny to measure
C
Six electrons
D
One neutron
7) If an atom has six protons and four neutrons, what is its charge?
A
+2
B
+4
C
+6
D
More information is needed to answer this
8) If an atom has nine protons, eight neutrons, and ten electrons what is its charge?
A
+1
B
More information is needed to answer this
C
-1
D
0
9) Helium has two protons, two neutrons, and two electrons. What is the charge of this atom?
A
0
B
+2
C
+4
D
More information is needed
10) To find the atomic mass of a particular atom you need to know
A
Simply what element that atom belongs to
B
The number of neutrons
C
The number of protons
D
The number of protons and neutrons
*select an answer for all questions
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