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PES 1st Semester REVIEW

Total questions: 70

Worksheet time: 35mins

Name
Class
Date
1.

What is the special name of Family 2 on the Periodic Table?

a)

Alkali Metals

b)

Alkali Earth Metals

c)

Transitional Metals

d)

Aluminum Metals

2.

What is the special name of Family 17 on the Periodic Table?

a)

Noble Gases

b)

Oxygen Group

c)

Nonmetal Gases

d)

Halogens

3.

What is the special name of the Families 3-12 on the Periodic Table?

a)

Alkali Metals

b)

Alkali Earth Metals

c)

Radioactive Metals

d)

Transitional Metals

4.

What are the things that are kept the SAME on purpose in an experiment called?

a)

dependent variables

b)

independent variables

c)

control variables

d)

precision variables

5.

The THING that you change on PURPOSE in an experiment is called the what?

a)

Dependent Variable

b)

Independent Variable

c)

Control Variable

d)

Changing Variable

6.

The results that you see in an experiment BECAUSE of what you did on purpose is called the what? (there may be more than one of them in an experiment)

a)

Dependent Variable

b)

Independent Variable

c)

Control Variable

d)

Resulting Variable

7.

Which of the following is the LEAST precise?

a)

3.6

b)

3.2

c)

2.9

d)

3.1

8.

Accuracy is _____________.

a)

consistency

b)

correctness

c)

constant

d)

none of these

9.

Scientific evidence must be ___________ and _________.

a)

accurate and biased

b)

accurate and repeatable

c)

objective and repeatable

d)

testable and biased

10.

A scientific explanation supported by much evidence collected over a long period of time is a ___________.

a)

law

b)

hypothesis

c)

theory

d)

deduction

11.

A rule that explains how things work in the universe is called a ___________.

a)

law

b)

hypothesis

c)

theory

d)

deduction

12.

How many of the following represent a CHEMICAL change?

shredding paper, burning a marshmallow, eating a marshmallow, melting an ice cube

a)

0

b)

1

c)

2

d)

3

13.

If you test a solution with pH paper and it turns YELLOW, the solution is a/n what?

a)

acid

b)

base

c)

salt

d)

neutral solution

14.

The pH of a base is what?

a)

above 7

b)

below 7

c)

equal to 7

d)

0

15.

The pH of a neutral solution is what?

a)

above 7

b)

below 7

c)

7

d)

0

16.

Most of the elements on the Periodic Table are of what PHASE/STATE?

a)

solid

b)

liquid

c)

gas

d)

none of these

17.

Most of the elements on the Periodic Table are found naturally having what property?

a)

metalloid

b)

nonmetal

c)

metal

d)

solid

18.

The smallest particle of an element that keeps its chemical identity is called a/n what?

a)

molecule

b)

compound

c)

atom

d)

mixture

19.

More than one ATOM of the same element is a what?

a)

molecule

b)

mixture

c)

compound

d)

triatomic

20.

More than one ELEMENT chemically joined is called a what?

a)

molecule

b)

mixture

c)

compound

d)

triatomic mixture

21.

Who made the first periodic table?

a)

Meitner

b)

Mendeleev

c)

Bohr

d)

Rutherford

22.

Who co-discovered nuclear fission (the splitting of the atom)?

a)

Meitner

b)

Mendeleev

c)

Bohr

d)

Rutherford

23.

Who is credited with the IDEA that electrons can be found in rings or levels around the nucleus?

a)

Meitner

b)

Mendeleev

c)

Bohr

d)

Rutherford

24.

Fission means to _________.

a)

come togerher

b)

split

c)

react

d)

bond

25.

An ION of an element has a different number of what?

a)

protons

b)

neutrons

c)

electrons

d)

electrions

26.

An ISOTOPE of an element is a different form of the same element with different number of what?

a)

protons

b)

neutrons

c)

electrons

d)

electrions

27.

Which of the following subatomic particles must remain the same for an element to retain its identity?

a)

protons

b)

neutons

c)

electrons

d)

electrions

28.

The Noble Gases do not bond because?

a)

they have negative oxidation numbers

b)

they have positive oxidation numbers

c)

they are highly unstable

d)

their outer electron shell is filled

29.

How many valence electrons does Family 16 or Main Group 6 have?

a)

2

b)

6

c)

1

d)

7

30.

How many valence electrons do the Noble Gases have?

a)

1

b)

6

c)

8

d)

7

31.

What is the common charge/oxidation number of the Alkali Earth Metals?

a)

-1

b)

+1

c)

-2

d)

+2

32.

What is the common oxidation number of the nonmetals in Family 15 or Main Group 5?

a)

+5

b)

-5

c)

+3

d)

-3

33.

In the Lewis dot model, how many dots would an element in Family 14/Main Group 4 have?

a)

1

b)

2

c)

3

d)

4

34.

How many neutrons are there in an atom with atomic number 7 and mass number 16?

a)

7

b)

16

c)

8

d)

9

35.

What is the common oxidation number of Family 1?

a)

-1

b)

+1

c)

-2

d)

+2

36.

What is the mass number of an element with 12 protons and 13 neutrons?

a)

12

b)

13

c)

-2

d)

25

37.

When metals form an ionic bond they generally ____________ electrons?

a)

take

b)

give

c)

share

d)

none of these

38.

When nonmetals make an ionic bond, they generally __________ their electrons?

a)

lose

b)

gain

c)

share

d)

none of these

39.

_______________ are located on the right side of the Periodic Table?

a)

metals

b)

nonmetals

c)

metalloids

d)

semi-metals

40.

A Bohr Model for Bromine would have electrons in how many orbitals/shells/levels?

a)

1

b)

7

c)

4

d)

none of these

41.

The most reactive nonmetals are from Family _____.

a)

17

b)

16

c)

15

d)

18

42.

Which of the following is the correct formula for Magnesium Bromide?

a)

Mg2Br

b)

MgBr2

c)

Mg2Br1

d)

Mg2Br2

43.

What is the correct name of Ba3P2?

a)

Barium Diphosphide

b)

Tribarium Diphosphide

c)

Tribarium Phosphide

d)

Barium Phosphide

44.

What happens during a chemical change?

a)

bonds are broken

b)

bonds are reformed

c)

energy is lost

d)

bonds are broken and reformed and energy is converted

45.

In a chemical equation the ____________ are found where the arrow points AWAY from?

a)

molecules

b)

atoms

c)

reactants

d)

products

46.

When balancing equations, ____________ may be added to obey the Law of Conservation of _____________.

a)

subscripts, Mass

b)

coefficients, Mass

c)

subscripts, Atoms

d)

coefficients, Atoms

47.

In a covalent bond electrons are _____________ and in an ionic bond electrons are _____________.

a)

shared, transferred

b)

shared, shared

c)

transferred, transferred

d)

transferred, shared

48.

The pH of an acid is what? (remember acids begin with H and cause unexpected color change)

a)

above 7

b)

below 7

c)

equal to 7

49.

The pH of a base is what? (a base is the opposite of an acid and ALSO causes unexpected color change)

a)

above 7

b)

below 7

c)

equal to 7

50.

Distilled water is NEUTRAL and does not cause a color change. The pH of a neutral solution is what?

a)

above 7

b)

below 7

c)

equal to 7

51.

In a phase change diagram, the flat areas represent what?

a)

2 phases are present

b)

1 phase is present

c)

when the substance has a constant temperature

d)

a and c

52.

On a phase change diagram, what does an uphill line/positive slope represent?

a)

increase in temperature

b)

phase change

c)

one phase is present

d)

a and c

53.

Which of the following is true regarding the 3 phases/states of matter?

a)

Solids have the least amount of space between particles and the most collisions.

b)

Gases have the least amount of space between particles and the most collisions.

c)

Solids have the least amount of space between particles and the least collisions.

d)

Gases have the least amount of space between particles and the least collisions.

54.

Which of the following describes a heterogeneous mixture?

a)

The specific parts are distinguishable from one another.

b)

The solute is dissolved in the solvent.

c)

The solvent is dissolved in the solute.

d)

none of these

55.

A _________________ is another name for a homogeneous mixture and to create one the ________________ dissolves the ______________________.

a)

mixture, solvent, solute

b)

mixture, solute, solvent

c)

solution, solvent, solute

d)

solution, solute, solvent

56.

Which physical property of matter means that it has the ability to change shape and return to original shape?

a)

malleable

b)

ductile

c)

elastic

d)

tensile strength

57.

Which physical property is common to nonmetals and means "does not allow the flow of electrons and heat easily"?

a)

ductile

b)

malleable

c)

conductor

d)

insulator

58.

To find an element's density you divide its ___________ by its __________ and all 3 of these are ________________ properties of matter.

a)

mass, volume, chemical

b)

volume, mass, chemical

c)

mass, volume, physical

d)

volume, mass, physical

59.

How many of the following 6 examples describes a physical change of matter?

ashes are formed from burned paper

a color change is witnessed when 2 colors are mixed

a fracture/crack occurs in the Earth as the tectonic plates collide

rain evaporates from a hot sidewalk

a container of a sealed liquid left in a hot car explodes

a rubber band is pulled and released causing an increase in temperature

a)

2

b)

3

c)

4

d)

5

60.

How many total atoms are present in the products in the chemical equation below:

NH4OH + H3PO4 -> H2O + O2 + (NH4)3PO4

a)

22

b)

23

c)

24

d)

25

e)

26

61.

How many reactants are present in the chemical equation below:

NH4OH + H3PO4 -> H2O + O2 + (NH4)3PO4

a)

15

b)

14

c)

3

d)

2

62.

How many total elements are present in the products in the chemical equation below:

NH4OH + H3PO4 -> H2O + O2 + (NH4)3PO4

a)

7

b)

6

c)

5

d)

4

63.

How many total elements are present in the products in the chemical equation below:

NH4OH + H3PO4 -> H2O + O2 + (NH4)3PO4

a)

7

b)

6

c)

5

d)

4

64.

How many total atoms are present in the reactants in the chemical equation below:

NH4OH + H3PO4 -> H2O + O2 + (NH4)3PO4

a)

11

b)

12

c)

13

d)

14

e)

15

65.

How many electrons does an element contain whose atomic/isotope notation has the number 187 at the top left, 85 in the bottom left and -3 in the top right?

a)

85

b)

102

c)

82

d)

88

66.

How many protons does an element contain whose atomic/isotope notation has the number 187 at the top left, 85 in the bottom left and -3 in the top right?

a)

85

b)

88

c)

82

d)

102

67.

How many neutrons does an element contain whose atomic/isotope notation has the number 187 at the top left, 85 in the bottom left and -3 in the top right?

a)

85

b)

88

c)

82

d)

187

e)

102

68.

An element that contains 34 electrons, 32 protons, and 29 neutrons has an atomic mass number of __________ and an atomic number of __________.

a)

29, 32

b)

61, 32

c)

34, 61

d)

32, 61

e)

66, 32

69.

An _______________ is a different form of the same element with a different number of neutrons and an ___________ is a charged atom that has either lost or gained electrons.

a)

isotope, nucleon

b)

nucleon, ion

c)

nucleon, isotope

d)

ion, isotope

e)

isotope, ion

70.

Why do elements bond?

a)

to release energy

b)

to share electrons

c)

to lose electrons

d)

to obtain a full outer energy level/shell

e)

to gain electrons

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