Q: Convert $$6.55 \times 10^7$ \ \mathrm{mm} to $$kilometers.

$$6.55 \times 10^3$ \ \mathrm{km}$$

Q: Which of the following conversions is correct for $$4.570 \times 10^4$ \ \mathrm{kg} to $$micrograms ($$\mu\mathrm{g}$$)?

$$4.570 \times 10$$^{10}$$ \ \mu\mathrm{g}$$

Q: A student converts $$7.9 \times 10^2$ \ \mathrm{L} to$$ $$\mathrm{in^3$}$$ using $$2.54 \ \mathrm{cm} = 1 \ \mathrm{in}. $$What is the correct answer?

$$4.8 \times 10^4$ \ \mathrm{in^3$}$$

Question 1

Which of the following is a chemical change?

Accepted Answer

Iron rusting

Question 2

A student measures the mass of a sample as 17.0 g and the density of ethanol at room temperature as $$0.789 \ \mathrm{g/mL}. $$What is the volume of the sample?

Accepted Answer

$$21.5 \ \mathrm{mL}$$

Question 3

Which of the following best describes a physical change?

Accepted Answer

Gold melting

Question 4

Convert $$6.55 	imes 10^7$ \ \mathrm{mm} to $$kilometers.

Accepted Answer

$$6.55 	imes 10^3$ \ \mathrm{km}$$

Question 5

A student converts $$5.50 \ \mathrm{kg/L} to$$ $$\mathrm{g/cm^3$}. $$What is the correct answer?

Accepted Answer

$$5.50 \ \mathrm{g/cm^3$}$$

Question 6

Which of the following conversions is correct for $$4.570 	imes 10^4$ \ \mathrm{kg} to $$micrograms ($$\mu\mathrm{g}$$)?

Accepted Answer

$$4.570 	imes 10$$^{10}$$ \ \mu\mathrm{g}$$

Question 7

A student converts $$7.9 	imes 10^2$ \ \mathrm{L} to$$ $$\mathrm{in^3$}$$ using $$2.54 \ \mathrm{cm} = 1 \ \mathrm{in}. $$What is the correct answer?

Accepted Answer

$$4.8 	imes 10^4$ \ \mathrm{in^3$}$$

Question 8

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

Accepted Answer

Ability to rust

Question 9

Student A measures the volume of a flask as $$10.07 \ \mathrm{mL}$$, $$10.09 \ \mathrm{mL}$$, and $$10.11 \ \mathrm{mL}. $$Student B measures $$10.04 \ \mathrm{mL}$$, $$9.82 \ \mathrm{mL}$$, and $$10.13 \ \mathrm{mL}. If $$the true value is $$10.00 \ \mathrm{mL}$$, which student is more accurate and which is more precise?

Accepted Answer

A is more accurate, A is more precise

Question 10

Which of the following best describes the difference between accuracy and precision?

Accepted Answer

Accuracy is how close measurements are to the true value; precision is how close measurements are to each other.

Question 11

Which of the following is the correct sum of $$6.85 + 8.550 + 3.975$$ with proper significant figures?

Accepted Answer

$$19.4$$

Question 12

Calculate $$\frac{(4.06 	imes 10^2$) 	imes (2.10 	imes 10^1$)}{3.00 	imes 10^1$}$$ and report with correct significant figures.

Accepted Answer

$$30.04$$

Question 13

Which of the following is NOT a chemical change?

Accepted Answer

Gold melting

Question 14

A student needs to convert $$1.00 \ \mathrm{L} to$$ $$\mathrm{cm^3$}. $$What is the correct answer?

Accepted Answer

$$1000 \ \mathrm{cm^3$}$$

Question 15

Which of the following statements about significant figures is correct?

Accepted Answer

Zeros between nonzero digits are significant.

Question 16

Which of the following is the correct conversion factor to change $$\mathrm{mm} to$$ $$\mathrm{km}$$?

Accepted Answer

$$1 \ \mathrm{km} = 10^6$ \ \mathrm{mm}$$

Question 17

Which of the following is a correct statement about density?

Accepted Answer

Density is mass divided by volume.

Question 18

Which of the following is the correct unit for density in the SI system?

Accepted Answer

$$\mathrm{kg/m^3$}$$

Question 19

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

Accepted Answer

Melting point

Chapter 1 Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard