1. Practice Test

2. Write the number of significant figures in the space provided (0
Write the number of significant figures in the space provided (0.5 pts each).
(a) cm _____ (b) m _____
(c) kg _____ (d) s _____

3. Calculate the following (1 points each) 
(a) 234 kg kg (b) kg kg
(c) (45.0 m)(3.250 m) (d) kg ÷ m3

4. Calculate the perimeter of the
Calculate the perimeter of the (6) Calculate the surface area of a sphere
a rectangle having sides of length having a radius of 5.00 cm.
4.00 cm and 6.0 cm (hint: SA = 4πr2) (3 points)

5. Complete the following conversions (2 points each)
2.00 cm = ? Mm (b) m/s = ? km/hr

6. ) A person goes to a farm animal trade show wishing to trade 3 horses for dogs. Given the information below, how many dogs will the person receive for their 3 horses? (6 points)
9 dogs = 4 sheep
sheep = 2 pigs
4 pigs = 3 cows
2 cows = 1 horse

7. Mars is located 2.29 x 1011 m from the sun and takes 687 Earth days to make one orbit around the sun. Calculate the speed of Mars in km/hr.

8. How much energy is given off by 500. g of water as it cools from 30
How much energy is given off by 500. g of water as it cools from 30.0 ºC to 10.0 ºC? c for water equals 4180 J/KgºC

9. 40. 0 grams of ice at -10. 0 °C is warmed until it become water at 20
40.0 grams of ice at °C is warmed until it become water at 20.0 °C. Calculate the energy used in this process. Hint: c for ice is 2050 J/Kg°C, heat of fusion is J/Kg, and c for water is 4180 J/Kg°C. (6 points)

10. 1000. g of lead (c = 130. J/Kg°C) is heated until it reaches a temperature of 150. °C. The lead is then placed into 1.50 L of 20.0 °C water (c = 4180 J/g°C). Calculate the final temperature of the lead/water combination. (6 points)