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20 questions
What is the word for anything that has mass and takes up space?
Volume
Weight
Matter
None of the Above
Which of these is a sample of matter?
An element
A compound
A mixture
All of the above are samples
What is a substance that cannot be broken down into simpler substances by chemical means?
Element
Atom
Molecule
Compound
What is the smallest unit of an element that keeps the element's chemical properties?
Molecule
Atom
Compound
None of the Above
What is the smallest unit of a substance that behaves like the substance?
Atom
Element
Compound
Molecule
What is a substance made up of atoms of different elements?
Molecule
Compound
Substance
None of the Above
What does a chemical formula represent?
A molecule
A compound
A substance
An element
What is matter that has a fixed composition and definite properties?
Pure substance
Pure compounds
Pure elements
None of the Above
What is a combination of substances that are not chemically combined?
Mixture
Compound
Element
None of the Above
How are mixtures classified?
How fast the substances mix
How poorly the substances mix
How well the substances mix
How slow the substances mix
Physical properties can be observed without changing the identity of a substance.
True
False
The temperature at which a liquid changes to a solid is the melting point.
True
False
The temperature at which a liquid changes to a gas is the boiling point.
True
False
Density =?mass
Weight
Volume
Length
Width
A chemical property describes how a substance changes by combining with other elements or breaking apart into new substances.
True
False
A physical change affects one or more physical properties without changing the identity of the substance.
True
False
Which of these is NOT a physical change?
Melting gold
Dissolving sugar in water
Crushing a can
Leaves changing color
Which has more mass?
In a graph, the x-axis is the
dependent variable (DV)
independent variable (IV)
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