Q: Which of the following is a correct conversion factor for mass?

$$1 \text{ kg} = 1000 \text{ g}$$

Q: Which of the following is the correct relationship between milliliters and liters?

$$1 \text{ L} = 1000 \text{ mL}$$

Q: Which of the following is the correct formula for the slope of a line on a graph?

$$\text{slope} = \frac{\text{rise}}{\text{run}}$$

Question 1

Which of the following best describes a chemical property?

Accepted Answer

The ability of a substance to react with oxygen to form rust.

Question 2

Which statement about the scientific method is correct?

Accepted Answer

A hypothesis is a possible explanation that can be tested by experiments.

Question 3

A student measures the length of a pencil as 12.50 cm. How many significant figures are in this measurement?

Accepted Answer

4

Question 4

Which of the following is the correct scientific notation for 0.00056?

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 5

A beaker contains 250 mL of water. What is this volume in liters?

Accepted Answer

$$0.250 L$$

Question 6

Which of the following is a correct conversion factor for mass?

Accepted Answer

$$1 	ext{ kg} = 1000 	ext{ g}$$

Question 7

A temperature is recorded as $$25^\circC. $$What is this temperature in Kelvin?

Accepted Answer

$$298 K$$

Question 8

Which of the following best describes a direct relationship as shown on a graph?

Accepted Answer

As one variable increases, the other variable also increases.

Question 9

If a measurement is reported as $$0.00450 g$$, how many significant figures does it have?

Accepted Answer

3

Question 10

Which of the following is the correct way to express $$44,000$$ with three significant figures in scientific notation?

Accepted Answer

$$4.40 	imes 10$$^{4}$$

Question 11

A nurse needs to convert a patient's weight from pounds to kilograms. If the patient weighs $$154 lb$$, what is the weight in kilograms? (Use $$1 	ext{ kg} = 2.2 	ext{ lb})$$

Accepted Answer

$$70 kg$$

Question 12

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignoring experimental results that do not support the hypothesis.

Question 13

A student records the following data: $$2.50 m$$, $$2.5 m$$, $$2.500 m. $$Which measurement has the greatest number of significant figures?

Accepted Answer

$$2.500 m$$

Question 14

Which of the following is the correct relationship between milliliters and liters?

Accepted Answer

$$1 	ext{ L} = 1000 	ext{ mL}$$

Question 15

A graph shows a straight line with a positive slope. What does this indicate about the relationship between the two variables?

Accepted Answer

There is a direct relationship between the variables.

Question 16

Which of the following is the correct formula for the slope of a line on a graph?

Accepted Answer

$$	ext{slope} = \frac{	ext{rise}}{	ext{run}}$$

Question 17

A solution contains $$5\%$$ salt by mass. How many grams of salt are present in $$200 g of $$solution?

Accepted Answer

$$10 g$$

Question 18

Which of the following is the correct definition of 'composition' in chemistry?

Accepted Answer

What a substance is made of.

Question 19

Which temperature is closest to the freezing point of water in Kelvin?

Accepted Answer

$$273 K$$

Question 20

A student needs to solve for $$x in $$the equation $$2x + 8 = 14. $$What is the value of $$x$$?

Accepted Answer

$$3$$

Chapter 1: Chemistry in Our Lives – GOB Chemistry Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard