State true or false. If false, give the correct statement. Two different elements may have similar atoms.

State true or false. If false, give the correct statement. Argon is mono atomic gas.

State true or false. If false, give the correct statement. A ball of iron floats in mercury.

State true or false. If false, give the correct statement. Compounds and elements are pure substances.

State true or false. If false, give the correct statement. Water is denser than kerosene.

State true or false. If false, give the correct statement. 1 Light year = 9.46 xx 10^5m .

State true or false. If false, give the correct statement. Density of water is 100kg//m^3 .

True or False. If False, give the correct statement. Air is not compressible.

State true or false. If false, give the correct statement. The nearest star to our solar system is proxima centaurai.

State true or false. If false, give the correct statement. Neptune is 30 AU away from sun.

True or False. If False, give the correct statement. Air is a pure substance