Grade 8 Metals and Non metals

Grade 8 Metals and Non metals

by Savita Singh

Multiple Choice

Name the metal which is in liquid state.

• Iron

• Mercury

• Zinc

• Aluminium

Multiple Choice

Metals are sonorous in nature. What is sonorous?

• Making into powder

• Drawn into wires

• Make sound on beating

• None of these

Multiple Choice

What does malleable mean?

• able to bend

• will break easily

• can be used for wire

• is shiny

Multiple Choice

What does ductile mean?

• electricity flows easily

• quacks like a duck

• can be drawn into a wire

• able to bend

Multiple Choice

The approximate number of elements we know about today is .......

• 18

• 48

• 118

• 1018

Multiple Choice

Sulfur

• Metal

• Nonmetal

Multiple Choice

What is NOT a property of metals

• brittle

• ductile

• malleable

• conductor

Multiple Choice

Have a high melting point

• Metals

• Non-Metals

Multiple Choice

Steel is an example of an

• Metal

• Non-Metal

• Alloy

Multiple Choice

Non-metals are insulators, this means electricity ______ flow through them.

• can

• cannot

Multiple Choice

Magnesium reacts with oxygen to make

• magnesium oxide / basic in nature

• magnesium oxide / acidic in nature

Multiple Select

When sodium reacts with water it produces ___________

• hydrogen

• carbon dioxide

Multiple Select

The metal oxides which dissolve in water are called

• Alkali

• Acid solution

Multiple Choice

Which of the following is a noble metal?

• zinc

• aluminum

• gold

• iron

Multiple Choice

What is the chemical nature of metal hydroxides?

• basic

• acidic

• neutral

• acidic and neutral

Multiple Choice

Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table . Based on these observations, which sample is most likely a nonmetal?

• Sample 1

• Sample 2

• Sample 3

• Sample 4