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15
×
Which of the following is a diatomic element?
O3
N2
CH4
CO2
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seesaw
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star
Double points!
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fairy
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5
10
15
20
25
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thief
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5
10
15
20
25
15
×
What do we call a molecule with three atoms?
triatomic
metallic
monatomic
polyatomic
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15
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what are atoms made of?
protons neutrons and electrons
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15
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Which of the following is monatomic?
Ne
Cl2
CO2
CO
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15
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what charge does a neutron have?
no charge
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monster
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gift
Win 5 points!
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fairy
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15
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25
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baam
Lose 15 points!
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15
×
A molecule made from one atom is called what?
polyatomic
diatomic
monatomic
triatomic
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15
×
what symbol is used for carbon?
C
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eraser
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seesaw
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fairy
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25
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banana
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15
×
who discovered electrons?
Thomson
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15
×
what does a ball in a ball and stick model show?
an atom
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15
×
What is the mass number of a phosphorus atom with 15 neutrons?
45
15
29
30
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15
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what does a stick in a ball and stick model show?
a bond
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15
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Where are electrons found in an atom?
inside the nucleus
orbiting the nucleus
in the neutron shell
with protons
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15
×
What is the mass number of a carbon atom with 8 neutrons?
6
14
20
12
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