Chemical Reactions and Magnetism Quiz

What does the temperature rise in the test tube indicate in the diagram?

• Endothermic reaction

• No reaction

• Neutralization

• Exothermic reaction

What type of reaction is shown by ice melting?

• Endothermic

• Exothermic

• Neutral

• Combustion

Which metal reacts most with water in the test tubes?

• Copper

• Sodium

• Iron

• Zinc

What gas is collected in the upside-down test tube over water?

• Hydrogen

• Oxygen

• Carbon dioxide

• Nitrogen

What is formed when magnesium burns?

• Hydrogen gas

• Magnesium carbonate

• Magnesium oxide

• Water vapor

Which test tube shows most rusting?

• Dry air only

• Oil-covered water

• Air and water

• Water only

What does bubbling in acid-metal reaction mean?

• Gas is released

• Water is formed

• No reaction

• Acid evaporates

What do particles do during melting?

• Stick closer

• Move apart and flow

• Vibrate slower

• Disappear

Why is sodium under oil?

• To make it shiny

• To prevent air/water contact

• To dissolve it

• To make it reactive

What does the popping sound indicate in a gas test?

• Hydrogen

• Oxygen

• Nitrogen

• Chlorine