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Worksheets

Chemistry of Life

Total questions: 52

Worksheet time: 26mins

Name
Class
Date
1.

What subatomic particle found in an atom has a positive charge?

a)

proton

b)

neutron

c)

electron

2.

What subatomic particle found in an atom has a negative charge?

a)

proton

b)

neutron

c)

electron

3.

What subatomic particle found in an atom has a no charge?

a)

proton

b)

neutron

c)

electron

4.

What subatomic particles are found in the nucleus of an atom?

a)

protons and neutrons

b)

protons and electrons

c)

neutrons and electrons

5.

What subatomic particles are found in energy levels surrounding the nucleus?

a)

protons

b)

neutrons

c)

electrons

6.

How many electrons fit in the first energy level of an atom?

a)

2

b)

4

c)

6

d)

8

7.

How many electrons fit in the second energy level of an atom?

a)

2

b)

4

c)

6

d)

8

8.

The atomic number represents the number of ____ in an atom.

a)

protons

b)

neutrons

c)

electrons

9.

Protons have a ____ charge.

a)

positive

b)

negative

c)

neutral

10.

Electrons have a ____ charge.

a)

positive

b)

negative

c)

neutral

11.

Neutrons have a ____ charge.

a)

positive

b)

negative

c)

neutral

12.

What four elements are essential to all living organisms?

a)

carbon, hydrogen, oxygen, nitrogen

b)

hydrogen, oxygen, potassium, sodium

c)

oxygen, nitrogen, chlorine, sodium

d)

nitrogen, carbon, boron, hydrogen

13.

What subatomic particles are red in the diagram?

a)

protons

b)

neutrons

c)

electrons

14.

What subatomic particles are blue in the diagram?

a)

protons

b)

neutrons

c)

electrons

15.

What subatomic particles are green in the diagram?

a)

protons

b)

neutrons

c)

electrons

16.

A(n) ____ is a pure substance that can not be broken down.

a)

element

b)

compound

c)

mixture

17.

A(n) ___ is a substance made up of two or more elements chemically combined.

a)

element

b)

compound

c)

mixture

18.

A(n) ___ is a combination of substances in which the individual components do not combine chemically and retain their own properties.

a)

element

b)

compound

c)

mixture

19.

A ____ mixture consists of different ingredients that are not even throughout.

a)

homogeneous

b)

heterogeneous

20.

A ___ mixture has the same uniform appearance and composition throughout.

a)

homogeneous

b)

heterogeneous

21.

A ____ is another name for a homogeneous mixture.

a)

element

b)

compound

c)

solution

d)

minerals

22.

Gold (Au) is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

23.

A beaker of sand and salt is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

24.

Water is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

25.

Carbon (C) is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

26.

Sand and salt poured together is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

27.

NaCl is an example of a(n) ___.

a)

element

b)

compound

c)

mixture

28.

pH stands for _____.

a)

percent hydrogen ions

b)

percent hydroxide ions

c)

percent helium ions

d)

percent chloride ions

29.

The pH scale ranges from _____.

a)

0-7

b)

7-14

c)

0-14

d)

0-20

30.

H+ is the symbol for _____.

a)

hydroxide ion

b)

hydrogen ion

31.

OH- is the symbol for _____.

a)

hydrogen ions

b)

hydroxide ions

32.

A(n) ____ is a substance that forms hydrogen ions in solution.

a)

acid

b)

base

33.

A(n) ____ is a substance that forms hydroxide ions in solution.

a)

acid

b)

base

34.

A solution with a pH of 5 is considered a(n) _____.

a)

acid

b)

base

35.

A solution with a pH of 12 is considered a(n) _____.

a)

acid

b)

base

36.

Which has more hydrogen ions a solution with a pH of 2 or a solution with a pH of 4?

a)

2

b)

4

37.

Which has more hydroxide ions a solution with a pH of 8 or a solution with a pH of 12?

a)

8

b)

12

38.

Which solution has an equal amount of hydrogen and hydroxide ions?

a)

pH = 2

b)

pH = 4

c)

pH = 7

d)

pH = 12

39.

Name the monomers that make up carbohydrates.

a)

Monosaccharides

b)

Fatty Acids and Glycerol

c)

Amino Acids

d)

Nucleotides

40.

Name the monomers that make up proteins.

a)

Monosaccharides

b)

Fatty Acids and Glycerol

c)

Amino Acids

d)

Nucleotides

41.

Name the monomers that make up proteins.

a)

Monosaccharides

b)

Fatty Acids and Glycerol

c)

Amino Acids

d)

Nucleotides

42.

Name the monomers that make up lipids.

a)

Monosaccharides

b)

Fatty Acids and Glycerol

c)

Amino Acids

d)

Nucleotides

43.

Name the monomers that make up nucleic acids.

a)

Monosaccharides

b)

Fatty Acids and Glycerol

c)

Amino Acids

d)

Nucleotides

44.

Name the macromolecules that are responsible for short term energy storage.

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

45.

Name the macromolecules that are responsible for long term energy storage.

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

46.

Name the macromolecules that are responsible for providing structure and speed up chemical reactions.

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

47.

Name the macromolecules that are responsible for our genetic information.

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

48.

What type of bonds are found between two water molecules?

a)

peptide bond

b)

hydrogen bond

c)

ionic bond

d)

covalent bond

49.

Water ____ temperature change.

a)

induces

b)

resists

c)

promotes

d)

helps

50.

Water has a positive end and a negative end which makes it a _____ molecule.

a)

polar

b)

non-polar

51.

Water has the ability to creep up thin tubes because of _____.

a)

capillary action

b)

water is less dense in the solid form

c)

adhesion

d)

resisting temperature change

52.

Ice floats because water is ____ dense in the solid form.

a)

less

b)

more