Phosphorus is kept in water to protect it from

• nitrogen

• hydrogen

• oxygen

• none of these

Oxides of non metals are

• acidic

• basic

• amphoteric

• none of these

Metals show

• malleability

• ductility

• conductance

• all of them

Which of these elements are a Non-Metal?

• Copper

• Gold

• Oxygen

Which of the following is a property of a non-metal?

• Conducts electricity and heats well
• Can be hammered into thin sheets
• Is brittle and breaks easily
• Has a shiny, metallic luster

If a material can easily be drawn into the shape of a wire, it is

• Ductile
• Magnetic
• Malleable
• Reactive

In chemistry, a displacement reaction is where

• a more reactive metal displaces a less reactive metal from its compound

• two reactive metals join together to form an alloy

• a less reactive metal displaces a more reactive metal from its compound

• a more reactive metal is removed from its compound by a less reactive metal

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

calcium is more reactive than iron. What will be produced when calcium sulphate and iron are mixed together?

• no reaction happens so the reactants stay the same

• calcium and iron sulphate

• iron sulphate and hydrogen

• water and iron sulphate

When an object changes shape when struck by a hammer.

• luster

• malleable

• brittleness

• ductile

Tags

NGSS.MS-PS1-2

The list which contains only metals is .......

• aluminium, copper, nitrogen

• iron, oxygen, hydrogen

• iron, silver, aluminium

• iron, sulphur, copper