Question

Directions: Use your knowledge of integers to solve each problem.

1. The melting point of sodium is 98 degrees Celsius (oC) and the melting point of zinc is 420oC. How much hotter is the melting point of zinc than that of sodium?

2. The average temperature of Venus is 480oC. The average temperature on Pluto is –2300C. How much warmer is Venus than Pluto?
3. Aluminum melts at 6590C and copper melts at 10830C. What is the difference between the melting points of aluminum and copper?
4. The boiling point of water is 212 degrees Fahrenheit (0F). Propane boils at about –440F. How much hotter is the boiling point of water than that of propane?
5. Unleaded gas freezes around –1500F. Water freezes at 320F. What is the difference between the two freezing points?
6. The temperature on the planet Mercury varies from 4000C on the day side to –1800C on the dark side. What is the difference in temperature?
7. The freezing point of oxygen is –218.790C and hydrogen is –252.80C. A lab is lowering the temperature inside a fridge. Which freezes first? How much colder does it have to be for both to freeze?
8. The temperature in Montreal, Quebec at 3 pm is 10C. The temperature drops to –90C at 3 am. How many degrees did the temperature drop?

9. The moon experiences many extremes in temperature because it has no atmosphere. For example, on the side of the moon that the sun is shining on, the temperature can reach 2600F. On the dark side of the moon, it gets as cold as –2800F. How much is the drop in temperature from day to night?

10. Gold melts at 19460F. Silver melts at 17620F. How much cooler is the melting point of silver than gold?

Answer 1

Answer: The melting point Zinc is 420 - 98, which equals 322 degrees. The Celsius is hotter than the melting point of sodium.

The temperature of Venus is 480 - (-230), which equals 710 degrees. The Celsius is warmer than the temperature on Pluto.

The difference between the two melting points of Aluminum and Copper is 1083 - 659, which equals 424 degrees Celsius.

The boiling point of Water is 212 - (-440), which equals 652 degrees. The temperature in Fahrenheit is hotter than the boiling point of Propane.

The difference between the two freezing points of unleaded gas and water is -150 - 32, which equals -182 degrees Fahrenheit.

The difference in the temperatures between the day and dark side of the planet Mercury is 400 - (-180), which equals 580 degrees Celsius.

Hydrogen freezes first, because it is a lower freezing point at -252.80C. Freezing oxygen, the temperature needs to be lower than -252.80C to about -218.79C.

The temperature drops 10 - (-9), which equals 19 degrees Celsius.

The drop in the temperatures from day to night on the moon is 260 - (-280), which equals 540 degrees Fahrenheit.

The melting point of Gold is 1946 - 1762, which equals 174 degrees. The temperature in Fahrenheit is hotter than the melting point of Silver.

Answer 2

Explanation:

The melting point of zinc is (420-98) = 322 degrees Celsius hotter than the melting point of sodium.

The temperature of Venus is (480 - (-230)) = 710 degrees Celsius warmer than the temperature on Pluto.

The difference between the melting points of aluminum and copper is (1083 - 659) = 424 degrees Celsius.

The boiling point of water is (212 - (-440)) = 652 degrees Fahrenheit hotter than the boiling point of propane.

The difference between the freezing points of unleaded gas and water is (-150 - 32) = -182 degrees Fahrenheit.

The difference in temperature between the day side and dark side of Mercury is (400 - (-180)) = 580 degrees Celsius.

Hydrogen freezes first because it has a lower freezing point (-252.80C). To freeze oxygen, the temperature needs to be lowered to (-218.79C).

The temperature dropped (10 - (-9)) = 19 degrees Celsius.

The drop in temperature from day to night on the moon is (260 - (-280)) = 540 degrees Fahrenheit.

The melting point of gold is (1946 - 1762) = 174 degrees Fahrenheit hotter than the melting point of silver.