13-09-2021 Year 11 Chemistry Quiz 1- C5 Chemical Changes

C5.1- Which of these metals is the most reactive?

• Magnesium

• Potassium

• Zinc

• Copper

C5.1- What gas is made when you react a metal with an acid?

• Carbon dioxide

• Oxygen

• Chlorine

• Hydrogen

C5.1- Which of these is not a valid way of finding where metals sit in the reactivity series?

• Compare their reactions with water

• Compare their reactions with acid

• Compare their reactions with oxygen

• Compare their reactions with copper sulfate solution

C5.1- Which of these is the correct balanced equation for the reaction between sodium and water?

• 
• 
• 
• 

C5.2- Why is there no reaction between sodium and potassium chloride solution?

• Because the activation energy is too high

• Because the particles are too big

• Because sodium is not reactive enough to displace potassium

• Because potassium is not reactive enough to displace sodium

C5.2- Which element is included in the reactivity series to show which metals can react with acids?

• Oxygen

• Hydrogen

• Carbon

• Chlorine

C5.2- Which of these is not an observation you would make when reacting a piece of lithium with copper sulfate solution?

• The blue colour of the copper sulfate solution would fade

• Smoke would be given off

• An orange-brown solid of copper would form in the container

• The temperature of the solution would increase

C5.2- Which of these is the most accurate definition of the word oxidation?

• Loss of electrons

• Gain of electrons

• Loss of oxygen

• Gain of oxygen?

C5.2- Which of these is not a possible definition of the word reduction?

• Loss of metal

• Gain of electrons

• Loss of oxygen

• Gain of hydrogen

C5.3- Which element is commonly used to extract less reactive metals from their ores?

• Hydrogen

• Carbon

• Oxygen

• Nitrogen