Chemical and Physical change 2

Name the reaction in which heat is taken in.

• Exothermic reaction

• Endothermic reaction

• Precipitation reaction

• Brisk effervescence

Which of these signs occur when potassium iodide reacts with lead nitrate?

• Temperature change

• Odour produced

• Precipitate formed

• Bubbles formed

Which is NOT an indication of a chemical change?

• Emission of light or heat

• Absorption of heat

• Formation of precipitate

• change in shape

What is the term for an insoluble solid formed after a precipitation reaction?

• Heat of reaction

• Precipitate

• Brisk Effervescence

• Colour change

Name the chemical reaction in which heat is given out.

• Exothermic reaction

• Endothermic reaction

• Precipitation reaction

• Brisk effervescence