Science @ Home Progress Test

What does this hazard symbol mean?

• toxic

• flammable

• corrosive

• explosive

• PH scale

• pH ruler

• pH scale

• pH statistical tables

Tags

NGSS.MS-PS1-2

What is the pH of distilled water?

• pH 12

• pH 3

• pH 8

• pH 7

What other laboratory substance can you use to test if colourless substance is an acid or an alkali?

• Catalyst

• Salt

• Universal Indicator

• Water

Which pH levels indicated a strong acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which substance is an acid?

• Water

• Bleach

• Orange juice

• Washing powder

Which pH level indicates a weak alkali?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak acid?

• 1-3

• 4-6

• 8-11

• 12-14

When a Universal Indicator is added to sulphuric acid, the solution turns red.

• True

• False

Pure water has a pH of 7. Pure water _______.

• is a base
• is a neutral substance
• could be either an acid or a base
• is an acid