Temperatures of water changing state

Question 1

Water in a cup is at 17 °C. By how many degrees must it cool to reach its freezing point?

Answer °C

Question 2

Pure water is at 37 °C (at normal air pressure). Is it a solid, a liquid or a gas?

• A. solid
• B. liquid
• C. gas

Question 3

At what temperature does pure water boil at sea level?

• A. 100 °C
• B. 50 °C
• C. 0 °C
• D. 212 °C

Question 4

Water in a pan starts at 25 °C. By how many degrees must it warm up to reach its boiling point?

Answer °C

Question 5

Pure water is at 37 °C (at normal air pressure). Is it a solid, a liquid or a gas?

• A. solid
• B. liquid
• C. gas

Question 6

At what temperature does pure ice melt?

• A. 0 °C
• B. 10 °C
• C. 100 °C
• D. 37 °C

Question 7

Water in a cup is at 18 °C. By how many degrees must it cool to reach its freezing point?

Answer °C

Question 8

Pure water is at −18 °C (at normal air pressure). Is it a solid, a liquid or a gas?

• A. solid
• B. liquid
• C. gas

Question 9

Why do people put salt on icy roads in winter?

• A. Salt is heavier than ice
• B. Salt makes the road hotter
• C. Salt water freezes at a lower temperature than pure water
• D. Salt soaks up the water

Question 10

Water in a cup is at 22 °C. By how many degrees must it cool to reach its freezing point?

Answer °C

Question 11

Pure water is at 99 °C (at normal air pressure). Is it a solid, a liquid or a gas?

• A. solid
• B. liquid
• C. gas

Question 12

At what temperature does pure ice melt?

• A. 10 °C
• B. 0 °C
• C. 100 °C
• D. 37 °C

Question 13

Water in a pan starts at 23 °C. By how many degrees must it warm up to reach its boiling point?

Answer °C

Question 14

Pure water is at 4 °C (at normal air pressure). Is it a solid, a liquid or a gas?

• A. solid
• B. liquid
• C. gas

Question 15

At what temperature does pure ice melt?

• A. 10 °C
• B. 100 °C
• C. 37 °C
• D. 0 °C

Question 16

Water in a pan starts at 16 °C. By how many degrees must it warm up to reach its boiling point?

Answer °C