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Teams
Name
Score
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trap
No points!
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fairy
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5
10
15
20
25
×
shark
Other team loses 25 points!
Okay!
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baam
Lose 25 points!
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15
×
What did Dalton’s experiments with gases show?
Matter combines in constant ratios
Protons change mass
Atoms can be divided
Electrons move freely
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lifesaver
Give 25 points!
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shark
Other team loses 5 points!
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×
gift
Win 20 points!
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baam
Lose 25 points!
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15
×
What happens when opposite charges come near each other?
They repel
They attract
They disappear
They explode
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15
×
What model of the atom did Thomson propose?
Nuclear model
Quantum model
Planetary model
Plum pudding model
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15
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What are atoms called when they gain electrons?
Neutrons
Cations
Anions
Isotopes
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15
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What part of Dalton’s atomic theory is no longer true?
Atoms cannot change in chemical reactions
Atoms of each element are identical
Atoms combine in whole-number ratios
Atoms are indivisible
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15
×
What force holds matter together at the atomic level?
Nuclear fission
Inertia
Electromagnetism
Gravity
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15
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What instrument did Thomson use in his discovery?
Electrostatic wand
Microscope
Telescope
Cathode ray tube
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15
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What was the nickname for Thomson’s atomic model?
Quantum model
Bohr model
Plum pudding model
Planetary model
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15
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What law says atoms are neither created nor destroyed in a chemical reaction?
Law of Conservation of Matter
Law of Definite Proportions
Theory of Relativity
Atomic Mass Law
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15
×
What did Thomson’s experiments show about the atom?
It is indivisible
It has only positive charges
It has a nucleus of protons
It contains negatively charged electrons
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15
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Why was Thomson’s discovery important?
It disproved electricity
It proved atoms have smaller particles
It found neutrons
It showed atoms have no charge
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15
×
What happens to an atom that gains electrons?
It becomes positively charged
It becomes neutral
It becomes negatively charged
It splits in half
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15
×
What is an inference in science?
A laboratory error
A direct measurement
A physical law
A conclusion based on indirect observations
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eraser
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gift
Win 20 points!
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rocket
Go to first place!
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banana
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