Ch 12 Chem/phy Changes: Question Preview (ID: 5676)

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Medicines that kill bacterial are called
a) antibiotics
b) plastic
c) polymer
d) penicillin

What is a polymer?
a) a bitter solution that changes colors
b) a chain of identical molecules connected together
c) a medicine that kills germs
d) a sour solution that changes colors

This describes the strength of an acid
a) alkalinity
b) identity
c) neutralizer
d) acidity

What was added to a solution to tell if it was an acid or base?
a) a pH
b) an indicator
c) an acid
d) a base

What is added to your stomach when you have a build up of acid?
a) more acid
b) lemon juice
c) water
d) a base

When bubbles form, this is an example of what change?
a) physical change
b) acid change
c) chemical change
d) neutral change

If a solution is not an acid or a base, it is
a) neutral
b) a polymer
c) basic
d) acidic

Plastic is a polymer made from
a) petroleum
b) physical reactions
c) liquids
d) gas

A candle burning is a chemical change because
a) the wax dissappears and becomes a gas
b) the candle can be reused
c) the candle changes color
d) the candle changes size and shape

Making a paper airplane out of paper is what kind of change?
a) chemical change
b) neither
c) chemical change and physical change
d) physical change

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