Unit 1 Chem Review Measurments/Density

What is the density of this liquid?

• 100 g/cm³

• 200 g/cm³

• 2 g/cm³

• 1 g/cm³

When the density of a substance is lower than the density of water the substance _____________ in water.

• Sinks

• Floats

An object has a mass of 21 g and a volume of 3 cm³. What's it's density?

• 7 g/l

• 7 g/m³

• 7 g/cm³

• 7 g/cm

An object has a mass of 15 g and a volume of 3 cm³. What's it's density?

• 4 g/cm³

• 15 g/cm³

• 3 g/cm³

• 5 g/cm³

Which cube has a higher density?

• Red

• Blue

Write 3.2 x 10³ in standard form.

• 3.200
• 3200
• 32000
• .0032

Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.

• 1.86 x 10⁵
• 1.86 x 10⁴
• 18.6 x 10⁴
• 186 x 10³

Write this number in standard form:  7.7 x 10⁹

• 7,700,000,000
• 7,700,000
• 7,000,000.000
• 70,000,000,000

If the exponent on your power of 10 is positive, is your number larger or smaller than 10?

• Larger
• Smaller

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6