Acids, Bases / Spark

When we test an acid:

• Red litmus paper turns blue

• Blue litmus paper turns red

• Red litmus paper remains red

__________ paper is used to test acids and bases.

• Indicator

• pH

• Litmus

When we test a base:

• Red litmus paper turns blue

• Blue litmus paper turns red

• Red litmus paper remains red

Soaps and cleaners are examples of ________

• base

• acid

When we test a neutral substance like water:

• Red litmus paper turns blue

• Blue litmus paper turns red

• Red litmus paper remains red

  and blue remains blue

Substances are classified into acids, bases and some are neutral.

• True

• False

Baking Soda is a base.

• True

• False

Tomato juice is an acid.

• True

• False

Vinegar is a base.

• True

• False

Strong acids and bases may be very harmful.

• True

• False