Unit 1 / 2 Test Chem Review

Example of a chemical change

• Flammability

• Burning

• Melting

• Cutting paper

Convert this number into scientific notation: 3800000

• 3.8 x10 ^6

• 3.8 x10 ^-6

• 38 X 10 ^5

• 38 X 10 ^-5

Chemistry is sometimes referred to as the central science because…

• It is the best science

• It overlaps with many other sciences

• It was the first science created

• It deals with the periodic table

Convert this number from scientific notation to expanded form: 3.8 X 10 ^-6

• 3800000

• 0.0038

• 3800000000000

• 0.0000038

Convert 3.8 km to m

• 38 m

• 0.0038m

• 3800m

• 3800000m

How many mg are in 1 g?

• 10

• 1

• 100

• 1000

If you want to solve for mass using the density equation…

• density X volume

• Density / volume

• Volume / density

• this is impossible

Which of the following is the correct equation to solve for Fahrenheit?

• oF = 349605439(oC) + 32

• oF = 1.8(oC) - 32

• oF = 1.8(oC) + 32

Which of the following is the correct equation to solve for Kelvin?

• K=oC + 273

• K=oC - 273

• K=oC + 873

The closeness to the true value of a measurement

• Precision

• Accuracy

• Grams

• Meters