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WorksheetsUnit 7- Lesson 2 The Atom
Total questions: 35
Worksheet time: 41mins
Name
Class
Date
1.
Everything is made up of little tiny things called _____
a)
compounds
b)
molecules
c)
atoms
d)
solids
2.
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
3.
These particles orbit around the nucleus of an atom. What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
4.
If a grapefruit's atoms were the size of blueberries, then the grapefruit would be the size of _____
a)
the Earth
b)
a house
c)
a city
d)
the solar system
5.
In the center of the atom is something called _____
a)
the kernel
b)
the cell
c)
the nucleus
d)
the focal point
6.
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
7.
Near the outside of an atom, you'd find _____
a)
electrons
b)
protons
c)
neutrons
d)
photons
8.
If an atom was the size of a football stadium, the nucleus would be _____
a)
too small to see
b)
barely visible
c)
the size of a marble
d)
the size of a house
9.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
10.
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
11.
Who stated that all atoms of the same element are excacty alike?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Borh
12.
J.J. Thompson discovered the ____________. His model is called the plum pudding model which we sometimes call the chocolate chip model.
a)
proton
b)
electron
c)
neutron
d)
nucleus
13.
Who came up with this model of an atom?
a)
J.J. Thompson
b)
Ernest Rutherford
c)
Neils Bohr
d)
James Chadwick
14.
Subatomic particle that has a negative charge and is located outside of the nucleus.
a)
Electron
b)
Proton
c)
Neutron
d)
Voltron
15.
What is the area in the atom around the nucleus called?
a)
electron cloud
b)
cytoplasm
c)
subatomic cloud
d)
cumulonimbus cloud
16.
What subatomic particles are located in the electron cloud?
a)
quarks
b)
protons
c)
electrons
d)
neutrons
17.
What is the standard unit of mass at the atomic level?
a)
centimeters
b)
millimeters
c)
amu
d)
milligrams
18.
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
19.
The atomic number represents the identity of the ________________.
a)
mass of the atom
b)
element
c)
electrons
d)
isotopes
20.
What is the electrical charge of a proton?
a)
1+
b)
1-
c)
neutral
d)
2-
21.
Which subatomic particle has a negative charge in the atom?
a)
proton
b)
neutron
c)
electron
d)
quark
22.
Atoms of the same element which have a different number of neutrons are called _________________.
a)
ions
b)
isotopes
c)
quarks
d)
molecules
23.
The number in the upper corner of an element tile (7 for nitrogen) is called _____
a)
the proton number
b)
the atomic number
c)
the electron number
d)
the mass number
24.
For a given element, the atomic number indicates the number of _____
a)
protons in the nucleus
b)
neutron in the nucleus
c)
electrons in the atom
d)
nucleons in the atom
25.
If an atom contains exactly three protons, then it's an atom of _____
a)
lithium
b)
gold
c)
nitrogen
d)
carbon
26.
If an atom contains exactly 79 protons, then it's an atom of _____
a)
lithium
b)
gold
c)
nitrogen
d)
carbon
27.
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
28.
The nucleus contains _____
a)
only protons
b)
protons and neutrons
c)
protons and electrons
d)
electrons and neutrons
29.
Which scientist explained that electrons were moving in fixed shells around the nucleus?
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
30.
How many protons, neutrons, and electrons does the element Potassium have?
a)
19 protons, 19 neutrons, 19 electrons
b)
19 protons, 20 neutrons, 19 electrons
c)
19 protons, 39 neutrons, 19 electrons
d)
39 protons, 19 neutrons, 39 electrons
31.
What is the atomic number for Silicon?
a)
14
b)
28.086
c)
Si
d)
Silicon
33.
What subatomic particle is represented by "a"?
a)
electron
b)
proton
c)
neutron
d)
nucleus
33.
What subatomic particle is represented by "a"?
a)
electron
b)
proton
c)
neutron
d)
nucleus
34.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
35.
How many electrons are in an atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
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