IS_Section Quiz_13.2-13.3_e

In the modern Periodic Table, the elements are arranged in order of decreasing mass number.

• True

• False

There are nine main groups in the modern Periodic Table.

• True

• False

A compound can be broken down into its constituent elements by chemical method.

• True

• False

Sea water is a mixture.

• True

• False

Non-metallic elements are located at the right side of the modern Periodic Table.

• True

• False

Elements in the same group have the same chemical properties.

• True

• False

Water can be broken down into hydrogen and oxygen by electricity.

• True

• False

A mixture is formed by chemical reactions.

• True

• False

Which of the following gases is used for filling balloons?

• A. Hydrogen

• B. Helium

• C. Nitrogen

• D. Oxygen

Which of the following statements about this mixture is/are correct?

(1) Iron filings can be separated from the sulphur powder by a magnet.

(2) The mixture is formed by a chemical reaction.

(3) The iron and sulphur in the mixture lose their original properties.

• A. (1) only

• B. (2) only

• C. (1) and (3) only

• D. (2) and (3) only