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Bridge to Chemistry

Total questions: 73

Worksheet time: 4hrs 45mins

Name
Class
Date
1.

Which subatomic part of an atom gives it a positive charge?

a)

Neutron

b)

Proton

c)

Electron

d)

Nucleus

2.

Which region of an atom has a negative charge?

a)

The nucleus

b)

Both nucleus and electron cloud

c)

The neutrons

d)

The electron cloud

3.

What is the smallest 'building block' of the elements that make up the universe?

a)

An atom

b)

An electron

c)

A proton

d)

A cell

4.

An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?

a)

0

b)

7

c)

6

d)

13

5.

The number of protons in the nucleus of an atom?

a)

Isotope

b)

Atomic mass

c)

Atomic number

d)

Element

6.

A certain atom of oxygen contains 8 protons, 8 neutrons, & 8 electrons. Another atom of unknown identity contains 9 protons. Which of the following MUST be true about this unidentified atom?

a)

It has 9 neutrons in its nucleus.

b)

It is an isotope of oxygen.

c)

Its atomic mass is a decimal number.

d)

It cannot be an atom of oxygen.

7.

Chemical reactions start with _____________ and end with _______________

a)

Reactants, Products

b)

Products, Reactants

c)

Substances, Chemicals

d)

Chemicals, Compounds

8.

The center of the atom is called

a)

Nucleus

b)

Negative

c)

Molecule

9.

"a" on the diagram is the

a)

Electron

b)

Nucleus

c)

Compound

10.

Particle with a positive charge (+)

a)

Proton

b)

Neutron

c)

Mixture

11.

Particle with a negative charge (-)

a)

Electron

b)

Neutral

c)

Proton

12.

How many protons in an atom of sodium (Na)?

a)

11

b)

8

c)

2

13.

Element H is

a)

Hydrogen

b)

Helium

c)

Iron

14.

O is the symbol for

a)

Oxygen

b)

Gold

c)

Carbon

15.

C is element

a)

Carbon

b)

Calcium

c)

Chlorine

16.

2 or more elements bonded together is

a)

Compound

b)

Mixture

c)

Chemical formula

17.

Which is an example of a compound?

a)

CO2

b)

O2

c)

Na

18.

The chemical formula of this compound is

a)

C2H6

b)

Ca2HO4

c)

C6H2

19.

How many Carbon atoms are in this compound

a)

6

b)

7

c)

3

20.

Elements are _________ 1 type of atom.

a)

Made of

b)

Tiny

c)

chemical formula

21.

How many elements are in this chemical formula?

H2SO4H_2SO_4  

a)

1

b)

2

c)

3

d)

4

22.

How many atoms of Carbon are in this formula? C6 H12O6C_{6\ }H_{12}O_6  

a)

6

b)

1

c)

12

23.

What elements are represented in this chemical formula? Fe2O3Fe_2O_3  

a)

Iron, Oxygen

b)

Francium, Europium, Oxygen

c)

Ferrium, Oxygen

d)

Berylium, Oxygen

24.

Which of the following is a molecule of a compound?

a)

H2H_2

b)

Cl2Cl_2

c)

H2OH_2O

d)

F2F_2

25.

Which does not belong in the group?

a)

Sodium

b)

Glucose

c)

carbon

d)

Element

26.

Is this an element or a compound? CaSO4CaSO_4  

a)

Element

b)

Compound

27.

How many elements are in this chemical formula? NaHCO3NaHCO_3  

a)

1

b)

2

c)

3

d)

4

28.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
29.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
30.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
31.
These are found on the Periodic Table.
a)
Compounds
b)
Elements
c)
Mixtures
32.

a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means

a)

element

b)

subatomic particle

c)

electron

d)

matter

33.

the basic structural unit of matter

a)

atom

b)

matter

c)

element

d)

nucleus

34.

a unique number for each element that equals the number of protons in an atom of that element

a)

element name

b)

element symbol

c)

atomic number

d)

atomic mass

35.

the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom

a)

element name

b)

element symbol

c)

atomic number

d)

atomic mass

36.
The atomic number of this pictured element is
a)
28
b)
58.6934
c)
Ni
d)
Nickel
37.
What is the atomic mass of Neon?
a)
10
b)
30
c)
10.18
d)
20.18
38.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
39.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
40.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
41.

A chemical reaction ...

a)

forms a new substance

b)

makes a mixture of several substances

c)

always involves flames

d)

all of these choices are true

42.

Electrons are:

a)

Positive

b)

Neutral

c)

Negative

43.
What is the charge of a neutron?
a)
positive
b)
negative
c)
neutral
d)
sweet
44.

What is the chemical symbol for sodium?

a)

S

b)

So

c)

Na

d)

K

45.

How many protons are in a nitrogen atom?

a)

5

b)

7

c)

14

d)

28

46.

In an atom, which subatomic particles are always equal?

a)

protons and electrons

b)

protons and neutrons

c)

neutrons and electrons

d)

protons, neutrons, and electrons

47.

How many valence electrons do the atoms of elements in group 13 have (the Boron Group)?

a)

3

b)

5

c)

8

d)

13

48.

Which of the following elements have atoms that are more massive than chlorine?

a)

lithium

b)

helium

c)

carbon

d)

argon

49.

Choose ALL of the alkali metals (group 1) from the list below:

a)

lithium

b)

copper

c)

mercury

d)

potassium

e)

sodium

50.

True or false: All elements in a family have the same number of valence electrons (except Helium and the transition metals).

a)

True

b)

False

51.

How many neutrons does the most common isotope of argon have?

a)

18

b)

20

c)

22

d)

8

52.

What is the element that has one more proton than tin (Sn)?

a)

antimony

b)

iodine

c)

lead

d)

indium

53.

How many total electrons to xenon atoms have?

a)

8

b)

54

c)

131

d)

132

54.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
55.
True or False? Neutrons have a negative charge
a)
True
b)
False
56.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
57.
the central region of an atom where its neutrons and protons are is its 
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
58.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
59.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
60.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
61.
Everything is made up of little tiny things called _____
a)
compounds
b)
molecules
c)
atoms
d)
solids
62.
From the diagram, which particles are indicated with the arrow?
a)
electrons and protons
b)
protons and neutrons
c)
electrons and neutrons
d)
photons and nucleons
63.
These particles orbit around the nucleus of an atom.  What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
64.
In the center of the atom is something called _____
a)
the kernel
b)
the cell
c)
the nucleus
d)
the focal point
65.
What are the names of the particles in the nucleus?
a)
protons and neutrons
b)
protons and electrons
c)
photons and neutrons
d)
nucleons and protons
66.
Near the outside of an atom, you'd find _____
a)
electrons
b)
protons
c)
neutrons
d)
photons
67.
Old pictures of the atom from science textbooks are wrong because _____
a)
they show the nucleus at the center
b)
they're not drawn to scale
c)
the nucleus is drawn too small
d)
the electrons are on the outside
68.
In terms of matter, the atom is almost entirely filled with _____
a)
orbiting electrons
b)
charged protons
c)
heavy neutrons
d)
empty space
69.
Of the three subatomic particles, which is the smallest and the lightest?
a)
protons 
b)
neutrons
c)
electrons
d)
They are all equal.
70.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
71.

The Model of the ATOM has:

a)

Changed many times

b)

Never changed

c)

Changed once

72.

Why do science models change?

a)

Because the scientist was proven wrong and disowned by the science community

b)

There was better evidence to prove the model was wrong

c)

One person's opinion caused the entire model to change

d)

New evidence was tested and supported, which modified the model

73.

What are Subatomic Particles?

a)

The entire atom

b)

the tiny parts inside the atom

c)

The electron cloud and space surrounding the atom

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