Chapter 1 Chemi

Chemistry is a natural science that deals with the study of:

• Living things and their life processes

• the physical features of the Earth

• the composition, structure, properties, and changes of matter.

• the composition, motion, and relative positions of stars and planets.

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An example of an element is

• salt

• mud

• water

• carbon

An example of a heterogeneous mixture is

• sugar

• hydrogen

• soil

• air

Which process is a chemical change?

• heating a liquid to boiling

• dissolving a powder in water

• burning a solid

• slicing a solid into two pieces

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Water changing states at 100 degrees Celsius is an example of

• chemical property

• extensive property

• physical property

• chemical change

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Every pure chemical compound consists of two or more elements

• combined chemically

• that can be separated by physical change

• that cannot be separated

• combined in any proportion

What are two properties of all matter?

• mass

• reactants

• volume

• boiling point

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Substances formed by chemical reaction are called the

• reactants

• products

• solute

• solvent

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The state of matter in which a material has a definite volume but no definite shape is called

• solid

• liquid

• gas

• plasma

If a material is tested and every sample has exactly the same properties and the same composition, it is

• homogenous

• heterogenous

• metallic

• metalloid