Ch22 - Elements, Compounds, & Mixtures

Question 1

Mixture

Answer 1

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Question 2

Compound

Answer 2

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Question 3

Element

Answer 3

A substance that cannot be decomposed into simpler substances by chemical means.

Question 4

Pure Substance

Answer 4

A substance made of only one type of atom or one type of molecule

(Example - Pure iron would only contain iron atoms and pure table sugar would only contain sucrose molecules.)

Question 5

Impure substance

Answer 5

A substance containing more than just one type of atom or more than just one type of molecule.

Question 6

Separation by Physical Means

Answer 6

Separating a mixture into separate parts using only physical means. Below are some examples.

Sorting

Distilling

Filtering

Crystallizing

Using a magnet

Centrifuging

Question 7

Solution

Answer 7

A homogeneous mixture of two or more substances.

Question 8

Solvent

Answer 8

A substance, usually a liquid, in which another substance is dissolved, forming a solution.

Question 9

Homogeneous Mixture

Answer 9

A mixture which has the same composition throughout, and the individual parts of the mixture are not easily identifiable.

(A homogeneous mixture is also referred to as a solution)

Question 10

Heterogeneous Mixture

Answer 10

A mixture of two substances that remain physically separate.

Question 11

Saturated Solution

Answer 11

A solution in which no more solute will dissolve.

Question 12

Solute

Answer 12

The substance that is dissolved in a solution.

(Example, in salt water, the salt is the solute)

Question 13

Suspension

Answer 13

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase if the mixture is allowed to sit around for a while.

Question 14

Unsaturated Solution

Answer 14

A solution that could still dissolve more of the solute.

Question 15

Mole

Answer 15

A measurement unit in chemistry that provides a bridge between the tiny atom and the realistic amounts of material chemists work with in the lab.

There are 6.02 x 10²³ atomic mass units in one gram.

Thus, 6.02 x 10²³ protons have a mass of one gram.

(That’s A LOT of protons!)

Question 16

When a sample of matter appears to be the same throughout, i.e. a single uniform phase even at very high magnification, it is referred to as _________________.

Answer 16

Homogeneous.

Question 17

Solid homegenous mixtures of metals are called ___________.

Answer 17

Alloys

Question 18

This is a __________

Answer 18

Compound

&

Pure Substance

Question 19

This is a _________

Answer 19

Pure Substance

&

an element

Question 20

This is a ____________.

Answer 20

Pure Substance

&

an element

(this is a diatomic element)

Question 21

This is a ______________.

Answer 21

compound

&

a pure substance

Question 22

This is a ______________.

Answer 22

Mixuture of

a monoatomic element

a diatomic element

&

a compound

Question 23

This is a ______________.

Answer 23

Homogeneous mixture of two diatomic elements

Question 24

This is a ______________.

Answer 24

Heterogeneous mixture

Question 25

This is a ______________.

Answer 25

Pure substance

&

an element

(this is a monoatomic element)

Question 26

This is a ______________.

Answer 26

Pure substance

&

an element

(this is a diatomic element)

Question 27

This is a ______________.

Answer 27

Homogeneous mixture of two elements

Question 28

This is a ______________.

Answer 28

Homogeneous mixture of two elements.

(The purple element is diatomic)

Question 29

This is a ______________.

Answer 29

homogeneous mixture of two diatomic elements.

Question 30

This is a ______________.

Answer 30

Homogeneous mixture of a diatomic element and a compound.

Question 31

This is a picture of a _________.

Answer 31

Heterogeneous mixture

Question 32

This is a ___________.

Answer 32

Homogeneous mixture

Question 33

This is a ___________.

Answer 33

Heterogeneous mixture.

Question 34

This is a picture of a _____________.

Answer 34

Heterogeneous Mixture

Question 35

This is a picture of a __________.

Answer 35

Homegeneous Mixture

aka

A solution