1.1
1.2
2.1
2.2
2.3
100
The study of the composition of matter and the changes that matter undergoes.
What is chemistry?
100
What is a key requirement for a hypothesis to be valid?
What is it is possible to test?
100
A form of matter that has a definite shape and volume.
What is a solid?
100
The simplest form of matter that has a unique set of properties.
What is an element?
100
A process that occurs when one or more substances are changed into one or more new substances.
What is a chemical reaction?
200
Nonrenewable
What is a fossil fuel: a renewable or nonrenewable resource?
200
What step in the scientific method is "formulating a question?"
What is the first step?
200
Water is a _______ substance.
What is pure?
200
What is the chemical symbol of Oxygen?
What is O?
200
Combustion is a _______ change.
What is chemical?
300
A gas that slowly increases the Earth’s temperature by trapping the sun’s heat and not letting it into space.
What is a greenhouse gas?
300
The variable in an experiment that is changed during an experiment
What is the independent variable?
300
Color is an example of what property?
What is physical?
300
Is CO a chemical symbol or chemical formula?
What is chemical formula?
300
A solid product that forms from a reaction and settles out of a liquid mixture.
What is a precipitate?
400
Chemical bonds between oxygen atoms and hydrogen atoms being broken is an example of what?
What is microscopic?
400
What profession was Copernicus?
What is an astronomer?
400
Is milk a pure substance?
What is false? (It's a mixture)
400
A mixture in which the composition is uniform throughout the mixture.
What is homogeneous mixture?
400
A substance that is present at the start of a chemical reaction.
What is a reactant?
500
Attempting to formulate a new adhesive that works well in extremely cold temperatures is an example of?
What is pure chemistry?
500
A scientific journal is how scientists communicate their scientific results to each other/the public.
What is a scientific journal?
500
A property of matter that depends only on the type of matter in a sample and not on the amount.
What is intensive?
500
Gasoline identified as what? A. Element B. Compound C. Mixture
What is C. Mixture?
500
All chemical changes involve a transfer of ______?
What is energy?
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