Compounds and mixtures

Question 1

What is a compound?

Answer 1

A substance formed when two or more elements chemically bond together.

Question 2

True or False: A mixture retains the properties of its individual components.

Answer 2

True

Question 3

Fill in the blank: A __________ is a combination of two or more substances that are not chemically bonded.

Answer 3

mixture

Question 4

Which of the following is an example of a compound? A) Air B) Water C) Salad

Answer 4

B) Water

Question 5

What type of mixture has a uniform composition throughout?

Answer 5

Homogeneous mixture

Question 6

What type of mixture has a non-uniform composition?

Answer 6

Heterogeneous mixture

Question 7

True or False: Compounds can be separated into their elements by physical means.

Answer 7

False

Question 8

What is the chemical formula for table salt?

Answer 8

NaCl

Question 9

Name one method to separate components of a mixture.

Answer 9

Filtration, distillation, or chromatography.

Question 10

What is the main difference between a compound and a mixture?

Answer 10

A compound is chemically bonded, while a mixture is not.

Question 11

Which of the following is a property of mixtures? A) Fixed composition B) Variable composition C) Chemical bonding

Answer 11

B) Variable composition

Question 12

Fill in the blank: The process of __________ separates a mixture based on differences in boiling points.

Answer 12

distillation

Question 13

What is an example of a heterogeneous mixture?

Answer 13

Salad or sand and salt.

Question 14

True or False: All compounds are pure substances.

Answer 14

True

Question 15

What is the simplest form of a compound called?

Answer 15

Molecule

Question 16

Which of the following is NOT a characteristic of a compound? A) Fixed composition B) Variable properties C) Unique chemical properties

Answer 16

B) Variable properties

Question 17

Name a common method to separate a solid from a liquid in a mixture.

Answer 17

Filtration

Question 18

What is the term for a mixture where one substance is dissolved in another?

Answer 18

Solution

Question 19

Fill in the blank: A __________ is a substance that can be separated into simpler substances by chemical means.

Answer 19

compound

Question 20

What process involves using a solvent to separate mixtures based on solubility?

Answer 20

Chromatography

Question 21

What is the general process to create a compound from elements?

Answer 21

Chemical reaction

Question 22

True or False: Mixtures can be homogeneous or heterogeneous.

Answer 22

True

Question 23

What is an example of a solution?

Answer 23

Saltwater

Question 24

What is the primary characteristic of a homogeneous mixture?

Answer 24

It has a consistent composition throughout.

Question 25

Which of the following is a characteristic of a mixture? A) Fixed ratio B) Variable composition C) Formed by chemical bonds

Answer 25

B) Variable composition

Question 26

What happens to the properties of substances in a mixture?

Answer 26

They retain their individual properties.