Science form 3

Reactivity of metal towards oxygen increases down the reactivity series of metal diagram

• True

• False

In a vigorous reaction between a more reactive metal such as magnesium and oxygen, a bright flame is observed

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Magnesium is more reactive towards oxygen compared to

• Calcium

• Zinc

• Sodium

• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a less vigorous reaction between a less reactive metal such as iron and oxygen, only a glow or slow change in colour is observed

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If carbon can remove oxygen from a metal oxide, it means carbon is ___________ reactive than the metal.

• more

• less

The most reactive metal in the reactivity series of metals is ______________.

• Calcium

• Potassium

• Magnesium

• Aluminium

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

Tags

NGSS.HS-PS1-2

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

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

Write the word equation between metal and oxygen.

• Metal + Oxygen $\overrightarrow{ }$ Metal oxide

• Metal + Oxygen $\overrightarrow{ }$ Metal oxygen

• Metal + Oxygen = Metal oxide

• Metal + Oxygen = Metal oxygen