$2.35 \times 10^{10}\ \mathrm{nm}$

Question 1

Which of the following best explains why ice floats on water?

Accepted Answer

Ice is less dense than liquid water because its molecules are arranged in a more open structure.

Question 2

A student measures the mass of a sample as 12.305 g. How many significant figures are in this measurement?

Accepted Answer

5

Question 3

Which of the following is an example of a chemical property?

Accepted Answer

The flammability of gasoline

Question 4

Convert $23.5\ \mathrm{m}$ to nanometers ($\mathrm{nm}$).

Accepted Answer

$2.35 	imes 10^{10}\ \mathrm{nm}$

Question 5

Which temperature scale has no negative values?

Accepted Answer

Kelvin

Question 6

A sample of ethanol has a mass of $78.0\ \mathrm{g}$ and a volume of $100.0\ \mathrm{mL}$. What is its density?

Accepted Answer

$0.780\ \mathrm{g/mL}$

Question 7

Which of the following is an extensive property?

Accepted Answer

Mass

Question 8

A NASA orbiter was lost due to a unit conversion error. Which of the following best describes the likely cause?

Accepted Answer

A failure to convert between the English and metric systems

Question 9

Which of the following is the correct formula to convert $68\ ^\circ\mathrm{F}$ to Celsius?

Accepted Answer

$^\circ\mathrm{C} = \frac{(^\circ\mathrm{F} - 32)}{1.8}$

Question 10

Which of the following is a derived SI unit?

Accepted Answer

Liter ($\mathrm{L}$)

Question 11

How many milliliters are in $1.63\ \mathrm{L}$?

Accepted Answer

$1630\ \mathrm{mL}$

Question 12

Which of the following numbers has three significant figures?

Accepted Answer

0.0540

Question 13

A student adds $2.345$ and $0.07$. What is the answer with the correct number of decimal places?

Accepted Answer

$2.42$

Question 14

Which prefix multiplier corresponds to $10^{-6}$?

Accepted Answer

micro

Question 15

Which of the following is an example of a physical change?

Accepted Answer

Boiling water

Question 16

A cube has a side length of $2.00\ \mathrm{cm}$. What is its volume in $\mathrm{cm}^3$?

Accepted Answer

$8.00\ \mathrm{cm}^3$

Question 17

Which of the following statements about significant figures is correct?

Accepted Answer

In multiplication and division, the result should have the same number of significant figures as the factor with the fewest significant figures.

Question 18

Which of the following is an intensive property?

Accepted Answer

Density

Question 19

A sample of gold has a mass of $38.6\ \mathrm{g}$ and a density of $19.3\ \mathrm{g/cm}^3$. What is its volume?

Accepted Answer

$2.00\ \mathrm{cm}^3$

Question 20

Which of the following is the correct scientific notation for $0.000135$?

Accepted Answer

$1.35 	imes 10^{-4}$

Chapter 1: Matter, Measurement, and Problem Solving – Study Notes

Study Guide - Practice Questions