Elements, Compounds, and Mixtures Flashcards

1

What is a heterogeneous mixture?

Single compound
Uniform composition
Single element
Non-uniform composition

2

Which element is most common in the universe?

Carbon
Oxygen
Hydrogen
Nitrogen

3

True or false: Elements can be broken down chemically

False
True

4

Identify a daily element

Air
Oxygen
Water
Salt

5

Which is a homogeneous mixture?

Vegetable soup
Air
Salad
Trail mix

6

What do organic compounds contain?

Carbon
Helium
Iron
Gold

7

What is a homogeneous mixture?

Non-uniform composition
Uniform composition
Single element
Single compound

8

Which is an organic molecule?

Salt
Protein
Water
Copper

9

What is a compound?

Single element
Atom
Two or more elements
Mixture

10

Difference between homogeneous and heterogeneous?

Physical state
Element type
Composition uniformity
Chemical bonds

11

Why are compound properties different?

Same elements
No change
New substance formed
Physical change

12

How can mixtures be separated?

Heating
Combining
Filtration
Freezing

13

Identify a daily mixture

Air
Water
Oxygen
Salt

14

Which is a compound example?

Copper
Sulfur
Helium
Water

15

What are elements made of?

Atoms
Molecules
Compounds
Mixtures

16

How many known elements exist?

200
150
100
118

17

Which is a heterogeneous mixture?

Glue
Coffee
Air
Trail mix

18

Why can't elements be broken down?

Chemical bonds
Multiple atom types
Physical bonds
Single atom type

19

Identify a daily compound

Oxygen
Salt
Carbon dioxide
Air

Elements, Compounds, and Mixtures

Questions 19

Elements, Compounds, and Mixtures

Questions 19