Pearson 9Fa - Types of Explosion

What is the boiling point of liquid nitrogen?

• -196 °C

• -273 °C

• 100 °C

• 0 °C

What type of change caused the explosion in a 'Trashcano'?

• Physical change

• Chemical reaction

• Nuclear reaction

• Biological reaction

What type of change caused the explosion of the petrol storage tank?

• Biological reaction

• Physical change

• Nuclear reaction

• Chemical reaction

What happened to the temperature of the surroundings during the explosion of the petrol storage tank?

• Increased

• Cannot be determined

• Stayed the same

• Decreased

What can increase gas pressure according to the particle model?

• Decreasing the number of gas particles

• Increasing the size of the container

• Decreasing the temperature

• Increasing the number of gas particles

What is the state of water at room temperature?

• (s)

• (l)

• (g)

• (aq)

What is the chemical formula for hydrogen peroxide?

• H₂O

• H₂O₂

• CO₂

• O₂

What happens to the bonds between atoms in a chemical reaction?

• They disappear

• They break and new bonds are formed

• They stay the same

• They become stronger

What is the combustion product of one atom of carbon?

• CO₂

• H₂O

• O₂

• N₂

What is the effect of increasing the temperature on gas pressure according to the particle model?

• Decreases pressure

• No effect on pressure

• Cannot be determined

• Increases pressure