Scientific Principles PowerPoint 3 Quiz

What is the chemical symbol for water?

• H2O

• O2

• CO2

• NaCl

What is the boiling point of water at sea level?

• 100°C

• 90°C

• 80°C

• 70°C

Increasing the pressure will increase what property of water?

• The boiling point

• The freezing point

• The density

• The color

By how many times does water expand when boiling?

• 1600 times

• 1000 times

• 500 times

• 2000 times

At what temperature does water have its maximum density?

• 4°C

• 0°C

• 10°C

• 100°C

At what temperature does water freeze?

• 0°C or 273°K

• 10°C or 283°K

• -10°C or 263°K

• 100°C or 373°K

What is the purpose of adding glycol (antifreeze) to water?

• Reduce the freezing point

• Increase the boiling point

• Change the color

• Increase the density

By what percentage does water expand when frozen?

• 10%

• 5%

• 15%

• 20%

What is the relative density of water?

• 1

• 0.5

• 2

• 1.5

What is the SI unit of velocity?

• m/s

• m/s²

• N

• Pa