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CHEMISTY

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

neutral particle

a)

Proton

b)

nucleus

c)

neutron

d)

Electron

2.

Has a positive charge

a)

Proton

b)

Neutron

c)

Nucleus

d)

Electron

3.

Smallest subatomic particle

a)

Proton

b)

Neutron

c)

Nucleus

d)

Electron

4.

Element with different # of electrons

a)

Isotope

b)

Ion

5.

Atomic number always equals the

a)

# of electrons

b)

# of neutrons

c)

# of protons

d)

Mass #

6.

Atom has atomic number of 5 and mass number of 9. How many protons

a)

5

b)

9

c)

14

d)

4

7.

Atom has mass # of 15 and 10 protons. How many neutrons?

a)

5

b)

10

c)

15

d)

25

8.

Type of bond with a metal paired to a nonmetal

a)

Metallic

b)

Ionic

c)

Covalent

9.

Unequal sharing of electrons results in a molecule being

a)

Neutral

b)

Nonpolar

c)

Polar

d)

Ionic

10.

Covalent bonds are stronger than Hydrogen bonds

a)

True

b)

False

11.

A substance has a surplus of H+ ions. What is the possible pH of this substance?

a)

4

b)

7

c)

10

12.

this is the formula for a hydroxide ion

a)

OH-

b)

H+

c)

H3O+

d)

H2O

13.
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
14.
These particles orbit around the nucleus of an atom.  What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
15.
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
16.
Near the outside of an atom, you'd find _____
a)
electrons
b)
protons
c)
neutrons
d)
photons
17.
The protons and neutrons are inside of the nucleus, and contain almost all of _____
a)
the charge of the atom
b)
the volume of the atom
c)
the mass of the atom
d)
the kinetic energy of the atom
18.
The mass number identifies the specific _____
a)
state of an element
b)
element
c)
isotope of an element
d)
weight of an element
19.
The sum of the number of protons and the number of neutrons is called the _____
a)
atomic number
b)
mass number
c)
isotope number
d)
average weight
20.
number of neutrons =  _____
a)
atomic number - mass number
b)
isotope number - atomic weight
c)
mass number - atomic weight
d)
mass number - atomic number
21.
In the Bohr model of the atom, what is the maximum number of electrons in the first shell?
a)
1
b)
2
c)
6
d)
8
22.
What are all of the chemical reactions that occur within an
organism referred to?
a)
Enzymes
b)
Macromolecules
c)
Metabolism
d)
Activation Energy

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