Chemistry Ch1

Phase change: solid-->liquid

• vaporization

• melting

• freezing

• condensation

The molecules are packed tightly, hold their shape, and the interactions between the particles are very strong

• solid

• liquid

• gas

• none

Which is a pure substance?

• a

• b

• c

• d

How many grams are in 1 kilogram?

• 10

• 100

• 1,000

• 10,000

What is an example of a physical change?

• wood burning in a fire

• rotting fruit

• mixing vinegar and baking soda

• water boiling to vapor

Write (0.000006) in scientific notation

• 0.6 x 10^-5

• 6 x 10^-8

• 60 x 10^-2

• 0.6 x 10^7

Convert 3 cups to quarts:

• 2

• 0.75

• 1.5

• 0.25

If a dose for a patient is 22 mg/kg per day how much would a 130lb person need for 3 days?

• 1,297.3 mg

• 2.59g

• 3,891.9 mg

• 2,860 mg

Convert 98.6F to Celsius

• 66.6 C

• 37 C

• 32 C

• 54.78 C

Convert 58 C to Kelvin

• 90 K

• 104.4 K

• 273 K

• 331 K