6.3 COMPOUND

6.3 COMPOUND

by KASMAWATI Moe

Multiple Select

1. Compound can be separated ________.

• physically

• chemically

Multiple Choice

2. A compound can only be separated chemically by the process of _______________.

• photosynthesis

• electrolysis

• respiration

• combustion

Multiple Select

3. Water consists of ___________ and __________.

• carbon dioxide

• oxygen

• carbon monoxide

• hydrogen

Multiple Select

4. Hydrogen gas is connected to the negative electrode which is called ______________

• anode

• cathode

Multiple Choice

5. Oxygen gas is connected to the positive electrode which is called ________________.

• anode

• cathode

Multiple Choice

6. Give the ratio of oxygen to hydrogen in water.

• 2:1

• 1:2

• 2:2

• 1:1

Multiple Choice

7. State the name of the acid that mixed with water during the process of electrolysis.

• nitrate acid

• sulphuric acid

Multiple Choice

8. Physical change form a new substance.

• YES

• NO

Multiple Choice

9. Photosynthesis is an example of chemical change.

• YES

• NO

Multiple Select

10. How to determine the presence of oxygen in electrolysis ?

• Lime water turns cloudy.

• Lights up the glowing wooden splinter.

• Extinguishes the wooden splinter.

• The blue litmus paper turns red.

Multiple Choice

• Element

• Compound

• Mixture

Multiple Choice

• Element

• Compound

• Mixture

Multiple Choice

• Element

• Compound

• Mixture

Multiple Choice

• Element

• Compound

• Mixture

Multiple Choice

• Compound

• Element

• Mixture

Multiple Choice

• Element

• Compound

• Mixture

Multiple Choice

• Element

• Compound

• Mixture of elements and compounds

• Mixture of elements

Multiple Choice

• Elements

• Mixture of Elements

• Compound

• Mixture of Compounds

Multiple Select

A compound is a substance made up of ___________ different ________ which are chemically bonded together.

• two or more

• non-metals

• elements

• one or more

• metals

Multiple Choice

Oxygen and Nitrogen are both examples of...?

• compounds

• elements

• mixtures

• none of the above

Multiple Choice

Mixtures can be easily separated.

• False

• True

Multiple Choice

Pure substances are made up of a single element or compound.

• True

• False

Multiple Choice

Pure substances are made up of a single element or compound.

• True

• False

Multiple Choice

What is electrolysis?

• breaking down of a compound using a current
• making a compound using a current