Chemistry Flashcard

Front

Calculate the Mr of CaCO₃.

Back

100

Front

PURE substance

Back

A substance made of only one type of atom or molecule

Front

Magnesium + sulfuric acid → ____ ____ +

Back

Magnesium sulfate

Front

What do we call a substance that can dissolve another substance?

Back

Solvent

Front

What is the first step in the chromatography experiment described in the image?

Back

Draw a pencil line 2cm from the bottom of the chromatography paper.

Front

What is used as the solvent in the chromatography experiment?

Back

Water

Front

How much water should be placed in the beaker for the chromatography experiment?

Back

1cm

Front

What should be used to secure the chromatography paper in the beaker?

Back

A splint and paper clip

Front

What does a pure substance produce in a chromatography test?

Back

One spot

Front

What does an impure (mixture) substance produce in a chromatography test?

Back

Two or more spots