4285884
Descrição
Quiz por nicole200104, atualizado more than 1 year ago
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Criado por nicole200104
quase 9 anos atrás
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Questão 1
Questão
Which statement most resembles a scientific theory?
Responda
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When the pressure on a sample of oxygen gas is increased 10%, the volume of the gas decreases by 10%.
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The volume of a gas is inversely proportional to its pressure.
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A gas is composed of small particles in constant motion.
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A gas sample has a mass of 15.8g and a volume of 10.5 L.
Questão 2
Questão
Where can you find chemicals?
Responda
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In a hardware store
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In a chemical stockroom
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All around you and even inside of you
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All of the above
Questão 3
Questão
What statement best defines chemistry?
Responda
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The science that studies solvents, drugs, and insecticides
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The science that studies the connections between the properties of matter and the particles that compose that matter
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The science that studies air and water pollution
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The science that seeks to understand processes that occur only in chemical laboratories
Questão 4
Questão
According to the scientific method, what is a law?
Responda
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A short statement that summarizes a large number of observations
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A fact that can never be refuted
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A model that gives insight into how nature is
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An initial guess with explanatory power
Questão 5
Questão
Which statement is an example of an observation?
Responda
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In a chemical reaction, matter is conserved.
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All matter is made of atoms.
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When a given sample of gasoline is burned in a closed container, the mass of the container and its contents does not change.
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Atoms bond to one another by sharing electrons.
Questão 6
Questão
Which characteristic is necessary for success in understanding chemistry?
Responda
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Curiosity
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Calculation
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Commitment
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All of the above
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