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Atoms & Elements Test Review

Total questions: 57

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

Which of the following scientists did not propose an early atomic model?

a)

 Ernest Rutherford

b)

John Dalton

c)

Dmitri Mendeleev

d)

Neils Bohr

2.

What can be found in the nucleus of an atom?

a)

Electrons

b)

Neutrons and Electrons

c)

Protons

d)

Protons and Neutrons

3.

How does the size of a proton compare to the size of an electron?

a)

They are about the same

b)

Electrons are larger

c)

Protons are much larger

d)

They have the same mass but different size

4.

When an atom gains an electron, it becomes a

a)

cation

b)

anion

c)

isotope

d)

compound

5.

How many protons does Tin (Sn) have?

a)

50

b)

119

c)

69

d)

22

6.

How many electrons does Tin (Sn) have?

a)

50

b)

119

c)

69

d)

22

7.

How many neutrons does Tin (Sn) have?

a)

50

b)

119

c)

69

d)

22

8.

If an ion of Tin (Sn) has a charge of -2, how many electrons does it have?

a)

50

b)

52

c)

48

d)

117

9.

How many neutrons are in an atom of Carbon-14?

a)

6

b)

14

c)

8

d)

10

10.

How many electron shells (energy levels) would a Bohr Diagram of Tin (Sn) have?

a)

3

b)

4

c)

5

d)

6

11.

A chemical bond formed when two atoms share electrons is called a(n)

a)

ionic bond

b)

covalent bond

c)

crystal bond

d)

metallic bond

12.

A chemical bond formed when two atoms transfer electrons is called a(n)

a)

ionic bond

b)

covalent bond

c)

crystal bond

d)

metallic bond

13.

Electrons involved in bonding between atoms are

a)

valence electrons

b)

inside the nucleus

c)

closest to the nucleus

d)

 positively charged

14.

Which of these statements about an element family on the periodic table is true?

a)

The elements have a wide range of properties.

b)

The elements have the same atomic number.

c)

The elements have similar chemical properties.

d)

The elements have the same atomic mass.

15.

Which parts of the atom move around the nucleus?

a)

 atomic mass units

b)

electrons

c)

protons

d)

neutrons

16.

gases have

a)

Molecules fixed in position, but  free to move

b)

 Molecules with no fixed position and free to move

c)

Molecules in a random position,  spread out but not free to move

d)

Molecules fixed in position, able  to vibrate but not move

17.

Which of these is an example of freezing?

a)

 Liquid wax becomes solid

b)

Solid chocolate become liquid chocolate

c)

 ice becomes water vapor

d)

water vapor becomes water

18.

When a gas changes into a liquid, the process is called

a)

Evaporation

b)

Sublimation

c)

Condensation

d)

Melting

19.

When a liquid changes into a gas, the process is called

a)

Evaporation

b)

Sublimation

c)

Condensation

d)

Melting

20.

The components of solutions are

a)

homogenous and cannot be separated

b)

heterogenous and cannot be separated

c)

homogenous and can be separated

d)

 heterogenous and can be separated

21.

In a solution of salt water, what is the solute and what is the solvent?

a)

salt is the solvent, water is the solute

b)

salt is the solute, water is the solvent

c)

 the container is the solute, the solution is the solvent

d)

sugar is the solute, salt is the solvent

22.

To decrease the concentration of a solution, you can increase the

a)

Temperature

b)

Amount of solute

c)

Pressure

d)

Amount of solvent

23.

To increase the concentration of a solution, you can increase the

a)

Temperature

b)

Amount of solute

c)

Pressure

d)

Amount of solvent

24.

Which of the following substances is basic?

a)

lemon

b)

tomato

c)

milk

d)

blood

25.

Which of the following substances is acidic?

a)

baking soda

b)

tomato

c)

drain cleaner

d)

blood

26.

Which substance has the highest concentration of H+ ions in solution?

a)

baking soda

b)

tomato

c)

drain cleaner

d)

blood

27.

Which of the following is NOT a common characteristic of an acid?

a)

 Sour taste

b)

 Turns litmus paper red

c)

 Burns the skin

d)

 Bitter taste

28.

Which of the following is NOT a common characteristic of a base?

a)

 Sour taste

b)

 Turns litmus paper blue

c)

feels slippery

d)

 Bitter taste

29.

The pH scale measures

a)

 the color of an acid.

b)

the charge of hydrogen ions.

c)

 the concentration of hydrogen or hydroxide ions.

d)

 the concentration of a salt.

30.

Table salt is an example of a/an

a)

atom

b)

element

c)

mixture

d)

compound

31.

The measurement of how much mass is contained in a given volume is called

a)

weight

b)

matter

c)

volume

d)

density

32.

The amount of space something takes up is called

a)

weight

b)

matter

c)

volume

d)

density

33.

The volume of an irregular object can be measured by

a)

multiplying the object’s length, width, and height.

b)

dividing the object’s density by its mass.

c)

Using the water displacement method.

d)

placing the object on a triple-beam balance.

34.

Calculate the density of a material that has a mass of 23.54 g and a volume of 12.18 cm3.

a)

1.93 g/cm3

b)

286.72 g/cm3

c)

0.52 g/cm3

d)

193 g/cm3

35.

The density of silver is 10.49 g/cm3.  If a sample of pure silver has a volume of 16.71 cm3, what would the mass be?

a)

0.63 g

b)

1.59 g

c)

175.29 g

d)

1.75 g

36.

If the density of a rock is 8.12 g/cm3 and the mass is 12.35 g, how much space does the rock take up?

a)

100.28 cm3

b)

0.66 cm3

c)

1.52 cm3

d)

10.02 cm3

37.

What is the volume of the fish?

a)

6 cm3

b)

0.6 cm3

c)

8 cm3

d)

4 cm3

38.

What is the best way to classify this substance?

a)

atom

b)

element

c)

compound

d)

mixture

39.

Which of the following would be a physical change?

a)

meat cooking

b)

rope burning

c)

ice melting

d)

sugar burning

40.

Which of the following would be a chemical change?

a)

ice melting

b)

fireworks exploding

c)

water evaporating

d)

paper tearing

41.

Which of the following would indicate a chemical change?

a)

A change in the state of matter

b)

something disolving

c)

a color change (no dye involved)

d)

a change in shape

42.

Solutions are made of:

a)

Oil and water

b)

Solutes and solvents

c)

Sodium and solutes

d)

Solvents and solutions

43.

Which of the following is an example of sublimation?

a)

ice melting

b)

water freezing

c)

ice turning into ice

d)

solid dry ice becoming gaseous CO2

44.

Solubility is an example of a

a)

Physical change

b)

Physical property

c)

Chemical change

d)

Chemical property

45.

When new substances are made and bonds are broken and reformed, this signifies that this has occurred:

a)

Chemical reaction

b)

Chemical property

c)

Physical change

d)

All of these

46.

You decide to make lemonade one day.  What would be considered to be the solutes in the lemonade?

a)

Water and ice

b)

Sugar and water

c)

Sugar and lemon juice

d)

Lemon juice and ice

47.

The atomic number of an element tells you the:

a)

Number of protons and electrons in an atom of that element

b)

Number of protons and neutrons in an atom of that element

c)

Number of protons only in an atom of the element

d)

Number of electrons and neutrons in an atom of the element

48.

Fruit salad, chocolate chip cookies, and trail mix are all examples of:

a)

Solutions

b)

Compounds

c)

Heterogeneous mixtures

d)

Homogeneous mixture

49.

All of the known elements can be found:

a)

On the periodic table

b)

In nature as free elements

c)

In a chemistry lab

d)

Only as compounds in nature

50.

When a substance changes state or phase but not its composition, this signifies that this has occurred:

a)

Chemical change

b)

Physical change

c)

Chemical property

d)

Physical property

51.

Which is more dense, 50 g of solid carbon or 50 g of liquid carbon?

a)

Liquid carbon

b)

Solid carbon

c)

Neither

d)

Both

52.

A substance has a pH of 6.7.  This pH indicates that it is:

a)

An acid

b)

A base

c)

Neutral

d)

none of these

53.

Reactions that release heat are called:

a)

Endothermic

b)

Chemical reactions

c)

Exothermic

d)

Physical changes

54.

In the reaction CH4 + O2 🡪 CO2 + H2O, the reactants involved in this reaction are:

a)

CH4 + O2

b)

CO2 + H2O

c)

Carbon, hydrogen and oxygen

d)

CO2, H2O, CH4, O2

55.

You perform a chemical reaction and you notice that a solid white powder forms at the bottom of your beaker.  This solid is considered: (2 answers)

a)

Evidence of a chemical change

b)

Evidence of a physical change

c)

A precipitate

d)

not part of the experiment

56.

The modern periodic table is organized by

a)

size of an atom

b)

atomic mass

c)

number of neutrons

d)

atomic number

57.

The atom of what element is in Period 4, Group 13

a)

Na

b)

Ga

c)

Al

d)

K

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