G7_Science Review

What gas burns with a squeaky pop?

• Oxygen

• Hydrogen

• Carbon Dioxide

• Nitrogen

Which of the following is used to measure temperature?

• Balance

• Thermometer

• Measuring cylinder

• Ruler

What happens when carbon dioxide is bubbled through limewater?

• It turns clear

• It turns milky

• It changes color

• It produces heat

What type of substance is made of only one type of atom?

• Mixture

• Element

• Compound

• Solution

In a neutralization reaction, what is produced?

• Salt and water

• Acid and base

• Gas and liquid

• Solid and gas

What is a common sign of a chemical reaction?

• Solid appears

• Temperature stays the same

• Color change

• No change

Which equipment would Tony use to measure 50 mL of solution?

• Balance

• Ruler

• Measuring cylinder

• Thermometer

What is the pH of hydrochloric acid?

• A) 7

• B) > 7

What type of change occurs when a solid disappears?

• Physical change

• Chemical change

• Both

• Neither

Which of the following is a secondary information source?

• Direct observation

• Experiment

• Book