5280 ft = 1 mile Show your work for credit.

2.54 cm = 1 inch Remember your significant figures.

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1. The density of lead is 11.6 g/ml. What is the volume of 35.0 g of lead?

2. Describe the scientific method.
 

3 Make the following conversions.

a) 25.0 miles/hour to meters/second.

b) 2025 cm³ to in³.

c) 125 lb. to mg.

d) Convert 26.5 ^oC to ^oF.

4 Which of the following are elements (E), compounds (C), or mixtures (M)?

Iron Saltwater Milk

Lead Water _____14K gold

5 Define the following.

a) Heterogeneous mixture

b) Solution