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Unit 2: Atoms, Matter, Periodic Trends
Test Description: Atoms, Matter, Periodic Trends
Instructions: Answer all questions to get your test result.
1) What are the three subatomic particles?
A
protons, positive, and electons
B
protons, neutrons, and neutral
C
protons, neutrons, and negative
D
protons, electrons, and neutrons
2) What is an isotope?
A
same number of neutrons, but different number of protons
B
same number of protons and neutrons
C
atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom
D
atoms with the same number of electrons, but different number of protons
3) This is the total number of protons and neutrons in an atom.
A
isotope
B
atomic number
C
mass number
D
electons
4) This is the number of protons that exist in an atom.
A
atomic number
B
mass number
C
number of mass
D
isotope
5) How many protons and neutrons does oxygen have
A
8 protons and 8 neutrons
B
8 protons and 16 neutrons
C
8 protons and 15 neutrons
D
16 neutrons and 8 protons
6) Define valence electrons.
A
negatively charged electrons
B
outermost electrons
C
inner-most electrons
D
middle electrons
7) How many valance electrons does Ca have?
A
4
B
2
C
1
D
3
8) Which statement has the correct description of an atom?
A
electrons are neutrals with no mass
B
neutrons are negatively charged with no mass
C
protons are positively charged with mass
D
protons are negatively charged while electrons are positively charged
9) Sodium is an example of....
A
noble gas
B
metaloid
C
non-metal
D
metal
10) Which of the following atoms have the largest atomic radius?
A
Cs
B
Na
C
Li
D
K
*select an answer for all questions
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