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Worksheets

ENR Q1 Benchmark

Total questions: 175

Worksheet time: 4hrs 40mins

Name
Class
Date
1.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
2.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
3.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 
a)
experimental group
b)
control group
c)
data
d)
variables
4.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
5.
How many variables do we want to be testing at one time?
a)
1
b)
2
c)
3
d)
4
6.
The measurable factor in an experiment is known as the: 
a)
Control
b)
Independent Variable
c)
Constant
d)
Dependent Variable
7.
 In a controlled experiment, the variable that is changed to test the hypothesis is called the –
a)
Controlled Variable
b)
Responsive Variable
c)
Dependent Variable
d)
Independent Variable
8.
Mr. McNiece wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. Identify the independent variable.
a)
pulse rate
b)
types of music
c)
classical music resulted in the highest pulse rate
d)
Mr. McNiece
9.
Mr. McNiece wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. Identify the dependent variable.
a)
Mr. McNiece
b)
pulse rate
c)
high pulse rate
d)
classical music resulted in the highest pulse rate
10.

Mrs. J. knew that students who attended her morning study sessions performed better on science tests but very few students attended them. She wanted to test if bringing doughnuts to the study sessions would increase student attendance. She continued to advertise the sessions in the same method and hold sessions at the same time. The only difference was that she brought doughnuts to the session. She had a 50% increase in attendance when she brought the doughnuts.

What is the dependent variable?

a)

The number of students who attend the study session

b)

The doughnuts

c)

The test

d)

The study session

11.

A study was done to determine to figure out if HOW LONG YOU SLEEP affects your TEST SCORE. The INDEPENDENT variable is...

a)

test scores

b)

place you sleep

c)

hours of sleep

12.

A scientist is testing the impact of light and dark on the moth behavior by turning a light on and off. The DEPENDENT variable is...

a)

amount of light

b)

moth behavior/their reaction

c)

number of moths

13.

Quantitative Observation

a)

An observation that deals with characteristics that cannot be expressed in numbers.

b)

The process of using your senses to gather information.

c)

An observation that deals with numbers.

14.

Qualitative Observation

a)

An observation using only your sense of sight.

b)

Observations that are made using your 5 senses

c)

An observation that deals with numbers.

15.

Science

a)

A way of learning about the nature world through observations and logical reasoning.

b)

The process of using your senses to gather information.

c)

Facts, figures, and other evidence gathered through observations.

16.

Controlled experiment

a)

A way of learning about the nature world through observations and logical reasoning.

b)

A scientific test done under controlled conditions, meaning that just one factor is changed at a time, while all others are kept constant.

c)

Facts, figures, and other evidence gathered through observations.

17.

Bias

a)

Prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.

b)

An attitude of doubt.

c)

a view or judgment formed about something, not necessarily based on fact or knowledge.

18.

Skepticism

a)

Prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.

b)

An attitude of doubt.

c)

a view or judgment formed about something, not necessarily based on fact or knowledge.

19.

Opinion

a)

Prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.

b)

An attitude of doubt.

c)

a view or judgment formed about something, not necessarily based on fact or knowledge.

20.

Evidence

a)

Proposed explanation made on the basis of limited evidence as a starting point for further investigation.

b)

Performing the experiment at least 3 times to make sure the data is the same.

An attitude of doubt.

c)

The available body of facts or information indicating whether a belief or proposition is true or valid.

21.

Hypothesis

a)

Proposed explanation made on the basis of limited evidence as a starting point for further investigation.

b)

Performing the experiment at least 3 times to make sure the data is the same.

An attitude of doubt.

c)

The ongoing process of discovery of in science using various techniques.

22.

Scientific inquiry

a)

Proposed explanation made on the basis of limited evidence as a starting point for further investigation.

b)

Performing the experiment at least 3 times to make sure the data is the same.

An attitude of doubt.

c)

The ongoing process of discovery of in science using various techniques.

23.

Dependent Variable

a)

The manipulated variable.

The one factor that the scientist changes during an experiment.

b)

The responding variable.

The factor that changes as a result of changes to the independent variable of the experiment.

c)

Not a variable.

Everything else in the experiment that stays the SAME (hence, not a variable).

24.

Constants of an experiment

a)

The manipulated variable.

The one factor that the scientist changes during an experiment.

b)

The responding variable.

The factor that changes as a result of changes to the independent variable of the experiment.

c)

Not a variable.

Everything else in the experiment that stays the SAME (hence, not a variable).

25.

Observing

a)

A way of learning about the nature world through observations and logical reasoning.

b)

The process of using your senses to gather information.

c)

Facts, figures, and other evidence gathered through observations.

26.

Data

a)

A way of learning about the nature world through observations and logical reasoning.

b)

The process of using your senses to gather information.

c)

Facts, figures, and other evidence gathered through observations.

27.

A farmer wanted to see what type of fertilizer made sunflowers grow largest. What is the independent variable?

a)
Type of fertilizer
b)
Size of sunflower
c)
type of sun flower
28.

A farmer wanted to see what the type of fertilizer made sunflowers grow largest. What is the dependent variable?

a)
Type of fertilizer
b)
Size of sunflower
c)
Type of sunflower
29.
Molly investigated if the age of students caused them to be better drivers. What is the independent variable?
a)
Type of car
b)
Skill of driving
c)
Age of student
30.
Molly investigated if the age of students caused them to be better drivers. What is the dependent variable?
a)
Type of car
b)
Skill of driving
c)
Age of student
31.
Sarah wanted to find out if the size of a car tire made it a smoother ride over bumps. What is the independent variable?
a)
Size of tire
b)
How smooth the ride was over bumps
c)
Type of car
32.
Penelope wanted to see if the temperature of the oven made cookies softer or harder. What is the dependent variable.
a)
Hardness of cookie
b)
Type of oven
c)
Temperature of oven
33.
Stacy measured the speed of 5 birds that lived around her house. What is the Independent variable?
a)
Type of Bird
b)
Speed of Bird
c)
weather outside
34.

The atomic number of an element is the same as its...

a)

number of protons

b)

number of electrons

c)

number of neutrons

d)

number of photons

35.

The mass number of an atom is

a)

the number of protons and neutrons

b)

the amount of electrons

c)

the number of electrons and protons

d)

the number of neutrons

36.

The number of protons in an atom always equals the number of

a)

electrons

b)

neutrons

c)

elements

d)

grams

37.

How many electrons does this oxygen atom have?

a)

6

b)

8

c)

10

d)

4

38.

How many protons does this atom have?

a)

8

b)

6

c)

4

d)

10

39.

What is the center of the atom called?

a)
proton
b)
neutron
c)
electron
d)
nucleus
40.
which particles are located in the nucleus?
a)
protons and neutrons
b)
newtrons and electrons
c)
protons and electrons
d)
protons, neutrons, and electrons
41.
Which particles have a positive charge?
a)
protons
b)
neutrons
c)
electrons
42.
Which particles have a negative charge?
a)
protons
b)
neutrons
c)
electrons
43.
Which particles have a neutral charge?
a)
protons
b)
neutrons
c)
electrons
44.
Which particles determine what type of atom it is?
a)
protons
b)
neutrons
c)
electrons
45.

The mass number of iodine is 126, and it’ has an atomic number of 53. It has ________________ protons and ______________ neutrons.

a)

126 protons and 53 neutrons

b)

53 protons and 126 neutrons

c)

53 protons and 73 neutrons

d)

73 protons and 53 neutrons

46.

The atomic number of krypton (Kr) is 36, and its mass number is 84. How many neutrons does it have?

a)

18

b)

36

c)

48

d)

72

47.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
48.

What is the atomic mass of Neon?

a)

10

b)

20.18

c)

10.18

d)

9.82

49.

What is the mass number of Copper?

a)

63

b)

29

c)

34

d)

92

50.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
51.
How many electrons does a Copper atom have?
a)
63
b)
29
c)
92
d)
34
52.

What is the mass number of Gold?

a)

79

b)

196.9665

c)

117

d)

197

53.
What is the atomic weight of Helium
a)
4
b)
2
c)
6
d)
1
54.
How many neutrons does a Hydrogen atom have?
a)
1
b)
2
c)
3
d)
0
55.
How many electrons does an Iodine atom have?
a)
53
b)
126
c)
73
d)
179
56.
What is the number highlighted?
a)
Atomic number
b)
Atomic mass
c)
Number of protons
d)
Number of electons
57.

What does the law of conservation of matter state?

a)

Matter can be made but not destroyed.

b)

Matter cannot be made but can be destroyed.

c)

Matter cannot be made or destroyed.

d)

Matter can always be destroyed.

58.

Identify which of the following is an example of matter?

a)

Sun

b)

Fire

c)

Heat

d)

Laughter

59.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

60.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
61.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
62.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
63.
Which two subatomic particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Neutrons and Electrons
c)
Electrons and Protons
d)
Protons and Neutrons
64.

What is the mass number?

a)

the number of protons in the nucleus

b)

the number of protons and neutrons in the nucleus

c)

the number of neutrons in the nucleus

d)

the number of protons and electrons in the atom

65.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
66.
How is the number of neutrons in the nucleus of an atom calculated?
a)
Add the number of e- and p+ together
b)
Subtract the number of e- from p+
c)
Subtract the number of p+ from the mass number
d)
Add the mass number to the number of e-
67.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
68.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

69.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
70.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
71.
Where is most of the mass in an atom located?
a)
in the nucleus
b)
in the protons
c)
in the neutrons
d)
in the electrons
72.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
73.

Which of the following determines the identity of an element?

a)

number of protons

b)

atomic mass

c)

number of neutrons

d)

number of shells

74.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
75.

How many protons does indium have?

a)

49

b)

66

c)

114

d)

115

76.

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

a)

Neutron

b)

Proton

c)

Electron

d)

Idontknowatron

77.

Identify #1

a)

proton

b)

neutron

c)

electron

d)

nucleus

78.

Identify #2

a)

proton

b)

neutron

c)

electron

d)

nucleus

79.

Identify #3

a)

proton

b)

neutron

c)

electron

d)

nucleus

80.

Identify #4

a)

proton

b)

neutron

c)

electron

d)

nucleus

81.

Name the element

a)

Boron

b)

Carbon

c)

Nitrogen

d)

Oxygen

82.

Name the element

a)

Aluminum

b)

Silicon

c)

Phosphorus

d)

Sulfur

83.

What are the three main groups of the periodic table?

a)

groups

b)

metal

c)

nonmetals

d)

metalloids

e)

periods

84.

What are the vertical columns on the periodic called?

a)

groups

b)

periods

c)

nonmetals

d)

metals

e)

metalloids

85.

What do the vertical columns on the periodic table tell us?

a)

The number of orbitals

b)

The number of valence electrons (electrons on the outer most shell)

86.

What are the horizontal rows on the periodic table called?

a)

periods

b)

groups

c)

metals

d)

nonmetals

e)

metalloids

87.

What do the horizontal rows on the periodic table tell us?

a)

The number of orbitals

b)

The number of valence electrons (the electrons on the outer most shell)

88.

How do you calculate the number of neutrons? *

a)

Mass = Atomic number - Neutrons

b)

Mass - Atomic number = Neutrons

c)

Atomic number = Neutrons

89.

What is the name of the element? (Periodic table will be needed)

a)

sodium

b)

magnesium

c)

vanadium

90.

What group and period does this element belong in? *

a)

period 1 and group 3

b)

period 3 and group 1

c)

period 2 and group 3

d)

period 3 and group 2

91.

How many valence electrons does the element have?

a)

1

b)

2

c)

3

d)

4

92.

How many orbitals does Nickel have?

a)

3

b)

4

c)

5

d)

10

93.

Who discovered the nucleus?

a)

Rutherford

b)

Bohr

c)

Thomson

d)

Dalton

94.

Who proposed a model with electrons moving in specific layers?

a)

Rutherford

b)

Bohr

c)

Thomson

d)

Dalton

95.

Who discovered the electrons?

a)

Rutherford

b)

Bohr

c)

Thomson

d)

Dalton

96.

This element has two valence electrons and two energy levels?

a)

Beryllium (Be)

b)

Lithium (Li)

c)

Zinc (Zn)

97.

How many valence electrons and energy levels does (Pb) lead have?

a)

4 valence electrons and 6 energy levels (orbitals)

b)

6 valence electrons and 4 energy levels (orbitals)

c)

5 valence electrons and 5 energy levels (orbitals)

d)

5 valence electrons and 10 energy levels (orbitals)

98.

Which of the following are physical properties of metal?

a)

Luster

b)

Conductivity

c)

Malleability

d)

Ductility

99.

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

a)

True

b)

False

100.

Name this group: These metals are the most reactive.

a)
b)
c)
d)
101.

Name this group: These metals are the second most reactive.

a)
b)
c)
d)
102.

Name this group: These metals contain familiar metals such as gold, iron, and copper.

a)
b)
c)
d)
103.

Find these groups: Locate Lanthanides and Actinides.

a)
b)
c)
d)
104.

Which of the following could be properties of nonmetals?

a)

Poor electrical conductivity

b)

Poor thermal conductivity

c)

Dullness

d)

Brittleness

105.

Name this family: This family contains an element known for its role in the chemistry of life.

a)

Nitrogen family

b)

Carbon family

c)

Halogen family

d)

Noble gases

106.

Find this family: This family contains nitrogen and phosphorus.

a)
b)
c)
d)
107.

Find this family: This family contains very reactive nonmetals like fluorine and chlorine.

a)
b)
c)
d)
108.

Name this group: These elements, also known as inert gases, tend to be nonreactive.

a)

Halogen family

b)

Noble gases

c)

Carbon family

d)

Nitrogen family

109.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
110.
__________ would have some characteristics of metals and some characteristics of nonmetals.
a)
Gold
b)
Sodium
c)
Arsenic
d)
Bismuth
111.

Metals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

are malleable and ductile.

112.

Nonmetals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

can be solid, liquids, or gases at room temperature.

113.

Which element is found in group 2, period 6?

a)

Oxygen (O)

b)

Barium (Ba)

c)

Selenium (Se)

d)

Carbon (C)

114.

Which halogen is found in period 4?

a)

Krypton (Kr)

b)

Xenon (Xe)

c)

Bromine (Br)

d)

Iodine (I)

115.

Which element has similar chemical properties as sodium but has 7 energy levels?

a)

Francium (Fr)

b)

Cesium (Cs)

c)

Rubidium (Rb)

d)

Potassium (K)

116.

Elements that have the same number of energy levels are said to be in the same ______.

a)

group

b)

period

c)

family

d)

classification

117.

Match the following

a)

a quantity or factor in an experiment that can change

1.

variable

b)

a variable whose value changes as a result of changes in other varibles

2.

dependent variable

c)

a variable you change to see how it affects another variable

3.

independent variable

d)

a value or a factor in an experiment that does not change

4.

constant

e)

standard used to compare the results of an experiment

5.

control

118.

The variable that is measured in an experiment is called the ​ (a)   variable.

The variable that must be controlled or kept the same in an experiment is called the ​ (b)   .

The variable that is changed on purpose in an experiment to test something is called the ​ (c)   variable.

Choose from the below words
dependent
constant
independent
119.

The​ (a)   is what you change or the ​ (b)   while the ​ (c)   is the ​ (d)   of that change.

Choose from the below words
independent variable
dependent variable
cause
effect
120.
This subatomic particle always identifies the identity (name) of the element
a)
Neutron
b)
Electron
c)
Proton
d)
amu
121.
The majority of elements are classified as ________ and are located on the left side/middle of the periodic table.
a)
Metals
b)
Noble Gases
c)
Nonmetals
d)
Metalloids
122.
A "pure" substance that cannot be separated or broken down into simpler substances
a)
Compound
b)
Mixture
c)
Period
d)
Element
123.
A substance composed of two or more elements chemically bonded together.  Examples are H2O and CO2.
a)
Element
b)
Compound
c)
Electron Cloud
d)
Metalloid
124.
These elements are found along the zig-zag line on the periodic table.
a)
Metal
b)
Group
c)
Metalloid
d)
Nonmetal
125.
The region around the nucleus that takes of the most volume of the atom
a)
Mass Number
b)
Electron Cloud
c)
Compound
d)
Atomic Number
126.
Most of the volume of an atom is occupied by —
a)
protons
b)
empty space
c)
a gas
d)
the nucleus
127.
When determining an element’s chemical properties, the most important subatomic particle to look at is —
a)
protons
b)
valence electrons
c)
neutrons
d)
positrons
128.
Which of these groups in the Periodic Table is made up primarily of elements that are gases at room temperature?
a)
Group 1
b)
Group 2
c)
Group 12
d)
Group 18
129.

Which of the atom models above represents a stable atom that will not react?

a)
Model A
b)
Model B
c)
Model C
d)
Model D
130.

Which atom has the largest atomic radius?

a)

potassium

b)

rubidium

c)

francium

d)

cesium

131.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
132.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
133.
Metals are good conductors of heat and electricity.
a)
true
b)
false
134.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
135.
Which periodic group has the smallest atomic radius?
a)
Alkali metals
b)
Halogens
c)
Noble Gases
d)
Transition metals
136.
The more protons there are, the  ____ .
a)
Weaker the pull
b)
Smaller the electrons
c)
Stronger the pull
d)
The bigger the electrons
137.
Which one has the largest radius?
a)
Lithium (Li, atomic #3)
b)
Boron (B, atomic #5)
c)
Neon (Ne, atomic #10)
d)
Nitrogen (N, atomic #7)
138.

Which of the following is MOST reactive?

a)

Lithium

b)

Lead

c)

Tin

d)

Copper

139.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

140.
Which two groups on the Periodic Table are the MOST reactive?
a)
Group 1 and Group 17
b)
Group 2 and Group 16
c)
Group 13 and Group 15
d)
Group 17 and Group 18
141.
How many valence electrons are elements trying to reach in their outer shells?
a)
1
b)
2
c)
5
d)
8
142.
What determines the reactivity of an element?
a)
Size of its nucleus
b)
Number of total electrons
c)
Number of valence electrons
d)
Number of shells
143.
How do you determine the number of valence electrons an element has?
a)
Look at its period
b)
Look at its group
c)
Look at its atomic number
d)
Look at its atomic mass
144.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

145.

Which elements have the most similar chemical properties?

a)

boron and carbon

b)

oxygen and sulfur

c)

aluminum and bromine

d)

argon and silicon

146.

The atomic number of an element is equal to its number of protons. Therefore, a logical conclusion is that the number of protons determines an element’s-

a)

Mass and atomic weight.

b)

The number of stable isotopes.

c)

Identity

d)

State of matter

147.

Which subatomic particle acts like "glue" and helps hold the nucleus together?

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

148.

Which subatomic particle allows different atoms to bond together into compounds?

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

149.

Which two subatomic particles help determine the charge of an atom?

a)

Proton

b)

Electron

c)

Neutron

150.

Which particles change the charge in atoms when ions are formed?

a)

Protons

b)

Electrons

c)

Neutrons

151.

An atom becomes _________ when it gains electrons.

a)

Positive

b)

Negative

c)

Neutral

152.

An atom becomes _______ when it loses electrons.

a)

Positive

b)

Negative

c)

Neutral

153.

When an atom loses a valence electron, it becomes a(n) _____________ ion.

a)

positive

b)

negative

c)

neutral

154.

When an atom gains a valence electron, it becomes a(n) _____________ ion.

a)

positive

b)

negative

c)

neutral

155.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
156.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
157.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
158.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
159.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

160.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

161.

How many neutrons does C-14 contain? (tap to enlarge the image)

a)

6

b)

7

c)

14

d)

8

162.

ALL atoms of the same element have:

a)

same number of proton

b)

same number of nucleon

c)

different number of neutron

d)

different number of electron

163.
How is carbon-12 different from carbon-14?
a)
They have a different number of protons
b)
they have a different number of electrons
c)
they have a different number of neutrons
164.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

165.

How do you calculate mass number?

a)

Mass x percent

b)

Protons + Electrons

c)

Protons + Neutrons

d)

Neutrons + Protons + Electrons

166.

76 protons and 114 neutrons

a)

Osmium-114

b)

Osmium-76

c)

Osmium-190

d)

Osmium-190.23

167.
How many neutrons does a Sodium 24 isotope have?
a)
12
b)
13
c)
14
d)
15
168.
What is an isotope? 
a)
A charged atom
b)
An atom with different amounts of neutrons
c)
An atom with different amounts of protons
d)
A neutral atom
169.

What is the correct number of subatomic particles of a phosphorous atom with a mass of 31?

a)

p# - 15, n# = 15, e# = 15

b)

p# - 15, n# = 16, e# = 15

c)

p# - 15, n# = 15, e# = 16

d)

p# - 16, n# = 15, e# = 15

170.

How many neutrons does a silver atom with a mass of 108 amu have?

a)

47

b)

108

c)

61

d)

108

171.

Is the number below the element symbol on the periodic table the mass number?

a)

Yes!

b)

NO!!

172.

What mass does a neutron have?

a)

1 amu

b)

0 amu

c)

-1 amu

d)

+2 amu

173.
A neutral atom of the isotope 2612Mg would consist of
a)
12 protons, 26 neutrons, 26 electrons
b)
26 protons, 12 neutrons, 26 electrons
c)
26 protons, 14 neutrons, 14 electrons
d)
12 protons, 14 neutrons, 12 electrons
174.
On the periodic table, how is atomic mass represented?
a)
As an average of the mass of different isotopes
b)
as the exact mass of every atom
c)
as the mass of the most common isotopes
d)
As the masses of all protons added together
175.
Question Image

Match the correct parts of the periods table

a)

Metals

1.

Blue (left)

b)

Nonmetals

2.

Yellow (Right)

c)

Metalloids

3.

Red (middle)

d)

Groups

4.

Columns 1-18

e)

Periods

5.

Rows 1-7

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