Science

The position of a metal in the reactivity series of metals depends on the reactivity of the metal when reacting with ....

• Carbon

• Hydrogen

• Oxygen

• Sulphur

Aluminium is more reactive than ....

• Calcium and Zinc

• Sodium and Gold

• Magnesium and Copper

• Lead and Iron

Tags

NGSS.HS-PS1-2

Based on the following diagram, what is the function of potassium manganate (VII) crystals in this experiment?

• To supply oxygen

• To avoid the metals to mix with each other

• To release heat

• To give out water vapour

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Complete the word equation below.

Magnesium + oxygen --> .....

• Magnesium

• Magnesium oxide

• Oxides

• Magnesium oxide + water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The diagram shows a setup apparatus for an experiment. What is the aim of the experiment?

• To determine the position of carbon in the reactivity series of metals

• To determine the position of hydrogen in the reactivity series of metals

• To observe the reactivity of metals with carbon dioxide

• To observe the reactivity of metals with water

Tags

NGSS.HS-PS1-1

What is the observation when aluminium oxide react with carbon?

• The mixture burns vigorously

• The mixture glows dimly

• The combustion is extinguish

• No change

When aluminium oxide react with carbon, there is no change that will occur. What is your inference for this observation?

• Carbon cannot remove the oxygen from the aluminium oxide

• Carbon is less reactive than aluminium

• Aluminium is more reactive than carbon

• All of the above

Tags

NGSS.HS-PS1-1

Complete the word equation below.

Zinc oxide + carbon --> ..........

• Zinc + carbon

• Zinc oxide + carbon

• Zinc + carbon dioxide

• No change

Based on the diagram, what is the function of anhydrous calcium chloride in the experiment?

• To absorb water vapour so that dry hydrogen will be produced

• To supply hydrogen gas

• To separate the metals

• To release heat for combustion

Hydrogen is more reactive than the following metals except .....

• Lead

• Copper

• Aluminium

• Mercury

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2