Q: Which of the following is the correct conversion factor to convert $$5.0\ \mathrm{cm}^3 to$$ $$\mathrm{m}^3$$?

$$1\ \mathrm{cm}^3 = 1 \times 10$$^{-6}$$\ \mathrm{m}^3$$;\ so\ 5.0\ \mathrm{cm}^3 = 5.0 \times $$10^{-6}$$\ \mathrm{m}^3$

Question 1

Which of the following statements best explains why graphite and diamond, both made of carbon, have such different properties?

Accepted Answer

Their atoms are arranged in different structures.

Question 2

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

Accepted Answer

Rusting of iron nails left outside.

Question 3

A sample of matter has a fixed volume and rigid shape. Its atoms are arranged in a long-range, repeating order. Which type of matter is this?

Accepted Answer

Crystalline solid

Question 4

Which of the following best describes a homogeneous mixture?

Accepted Answer

Sweetened tea

Question 5

Which separation technique would be most appropriate to separate a mixture of alcohol and water?

Accepted Answer

Distillation

Question 6

Which of the following is an intensive property?

Accepted Answer

Density

Question 7

Which temperature scale does NOT allow for negative values?

Accepted Answer

Kelvin

Question 8

Convert $$25.0\ ^\circ\mathrm{C} to $$Kelvin using the correct formula.

Accepted Answer

$$K = ^\circ\mathrm{C} + 273.15 = 25.0 + 273.15 = 298.15\ \mathrm{K}$$

Question 9

A student measures the mass of a metal sample as $$15.40\ \mathrm{g}$$ and its volume as $$2.00\ \mathrm{cm}^3. $$What is the density of the metal?

Accepted Answer

$$7.70\ \mathrm{g/cm}^3 ($$using $$\mathrm{density} = \frac{\mathrm{mass}}{\mathrm{volume}} = \frac{15.40}{2.00})$$

Question 10

Which of the following numbers has four significant figures?

Accepted Answer

4.500

Question 11

Which of the following is a compound?

Accepted Answer

Water ($$H_2O)$$

Question 12

A sample of copper is heated from $$20\ ^\circ\mathrm{C} to$$ $$100\ ^\circ\mathrm{C}. $$What happens to its density?

Accepted Answer

It decreases.

Question 13

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

Accepted Answer

Melting point

Question 14

Which prefix multiplier would be most appropriate for reporting a measurement of $$0.000001$$ meters?

Accepted Answer

micro

Question 15

Which of the following is an exact number?

Accepted Answer

The number of students in a classroom

Question 16

A student adds $$12.345\ \mathrm{g}$$ and $$0.6\ \mathrm{g}. $$What is the correct answer with the proper number of decimal places?

Accepted Answer

$$12.9\ \mathrm{g}$$

Question 17

Which of the following best describes the process of distillation?

Accepted Answer

Separating substances based on differences in boiling points

Question 18

Which of the following is the correct conversion factor to convert $$5.0\ \mathrm{cm}^3 to$$ $$\mathrm{m}^3$$?

Accepted Answer

$$1\ \mathrm{cm}^3 = 1 	imes 10$$^{-6}$$\ \mathrm{m}^3$$;\ so\ 5.0\ \mathrm{cm}^3 = 5.0 	imes $$10^{-6}$$\ \mathrm{m}^3$

Question 19

Which of the following is NOT a physical change?

Accepted Answer

Burning gasoline

Question 20

A student multiplies $$2.5 (2 $$significant figures) by $$3.42 (3 $$significant figures). What is the correct answer with the proper number of significant figures?

Accepted Answer

$$8.6$$

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

Guida di studio - Domande di pratica

Study guide - Flashcard