Metals

Things to remember

• Most of the metals are solid at ordinary temperature except mercury.
• Most of the metals are generally hard in nature.
• Metals possess metallic luster when they are freshly cut.
• Metals have relatively high densities except lithium, sodium and potassium.
• When metal are treated with oxygen on heating they react together to give basic oxides.
• Metals like sodium, potassium, and calcium burn in hydrogen and forms corresponding halides.
• Most of the reactive metals like sodium, potassium and calcium react with dilute acid to form salts and hydrogen gas.