Physical and Chemical Changes

Front

The diagram below shows changes happening to water in a specially shaped bottle. What changes did the water undergo?

Back

evaporation and then condensation

Front

Which describes water vapor leaving a river and going into the air?

Back

evaporation

Front

To see an atom, which of these could be used? Options: the human eye, a magnifying glass, an electron microscope, a classroom microscope

Back

an electron microscope

Front

A glass of hot water is sitting on a table. Which is true about the glass of hot water once a spoonful of salt has been completely dissolved in it?

Back

It weighs more

Front

A mixture of sand and gravel can be separated by putting it in a container with holes that only the sand can pass through. This method works to separate the mixture because sand and gravel differ in which physical property?

Back

size

Front

Which of the following is NOT a clue that a chemical change has occurred? change of state of matter, color change, production of a gas, production of heat

Back

change of state of matter

Front

The particles in a _____ are the farthest apart and move the fastest.

Back

gas

Front

A physical change occurs when a substance _____.

Back

changes shape, size, and form

Front

The candle has _____.

Back

undergone a physical change

Front

A chemical change creates a _________.

Back

new substance