Question 1

Which of the following is the correct conversion for 3.1 	imes $$10^{15}$$ \ \mu g$ to grams?

Accepted Answer

$$3.1 	imes 10$$^{9}$$ \ g$$

Question 2

Which of the following prefixes represents the smallest quantity?

Accepted Answer

Femto

Question 3

A student measures the temperature of a solution as 25 \ ^\circ C$. What is this temperature in Kelvin?

Accepted Answer

$$298.15 \ K$$

Question 4

Which of the following is a chemical change?

Accepted Answer

Rusting of a nail

Question 5

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more different kinds of atoms chemically bonded

Question 6

Which of the following is the correct symbol for the element with atomic number 12?

Accepted Answer

Mg

Question 7

Which of the following processes is a physical change?

Accepted Answer

Freezing of water

Question 8

How many molecules of hydrogen gas are required to react with one molecule of oxygen gas to form water, as shown in the reaction: $$2H_2 + O_2$ \rightarrow 2H_2O$$?

Accepted Answer

Two

Question 9

Which of the following statements is true about elements and compounds?

Accepted Answer

Compounds can be separated into their elements by chemical reactions.

Question 10

A sample of oxygen gas is compressed in a cylinder. Which type of change is this?

Accepted Answer

Physical change

Question 11

Which of the following is the correct relationship between Celsius and Kelvin temperature scales?

Accepted Answer

$$K = ^\circ C + 273.15$$

Question 12

Which of the following is the correct symbol for the element sodium?

Accepted Answer

Na

Question 13

Which of the following best describes the molecules in water vapor compared to those in ice?

Accepted Answer

Molecules in water vapor move more freely than in ice.

Question 14

Which of the following is the correct abbreviation for the prefix 'micro'?

Accepted Answer

μ

Question 15

Which of the following is a property of a physical change?

Accepted Answer

Change in state or appearance without changing composition

Question 16

Which of the following is the correct symbol for the element with atomic number 8?

Accepted Answer

O

Question 17

Which of the following is the correct meaning of the prefix 'nano'?

Accepted Answer

$$10^{-9}$$

Question 18

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

Accepted Answer

Ability to rust

Question 19

Which of the following is the correct formula for water?

Accepted Answer

$$H_2O$$

Question 20

Which of the following is the correct abbreviation for the prefix 'kilo'?

Accepted Answer

k

Chapter 1: Matter, Energy, and Measurement – Structured Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard