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