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WorksheetsBasic Atomic Structure
Total questions: 25
Worksheet time: 19mins
Name
Class
Date
1.
Which scientist emitted alpha particles at gold foil for his experiment?
a)
Dalton
b)
Bohr
c)
Rutherford
d)
Thomson
2.
Which scientist proposed the idea that electrons orbit the nucleus in set energy levels?
a)
Bohr
b)
Dalton
c)
Rutherford
d)
Thomson
3.
The Bohr model is also sometimes called the
a)
Quantum Mechanical Model
b)
Billiard Ball Model
c)
Planetary Model
d)
Plum Pudding Model
4.
The name of the scientist that came up with the plum pudding (or chocolate chip cookie) model is
a)
Thomson
b)
Rutherford
c)
Bhor
d)
Dalton
5.
In the cathode ray tube experiment, the beam moved ________ the positive side of a magnet proving that it was made of _________.
a)
away from, positive particles
b)
toward, positive particles
c)
away from, negative particles
d)
toward, negative particles
6.
In the gold foil experiment, most of the positively charged alpha particles passed through the gold foil, but some were deflected or bounced back. What did this prove?
a)
Atoms are small indivisible spheres
b)
Atoms are mostly empty space with a small, dense, positive center
c)
Atoms have negatively charged particles which orbit the nucleus
d)
Light is a wave, not a particle
7.
Who is credited with developing the atomic theory? (Sometimes called the father of atomic theory)
a)
John Dalton
b)
J. J. Thomson
c)
Earnest Rutherford
d)
Niels Bohr
8.
Who was the Greek philosopher who gets credit for coming up with the word atom (or atomos) for tiny indivisible particles which make up matter?
a)
Dalton
b)
Democritus
c)
Socrates
d)
Rutherford
9.
Is this Dalton's theory?
1)All matter is made of atoms
2) All atoms of a given element are identical in mass and properties
3) Compounds are formed by a combination of two or more different kinds of atoms.
4) A chemical reaction is are arrangement of atoms.
1)All matter is made of atoms
2) All atoms of a given element are identical in mass and properties
3) Compounds are formed by a combination of two or more different kinds of atoms.
4) A chemical reaction is are arrangement of atoms.
a)
Yes
b)
No
10.
Is the nucleus positively or negatively charged?
a)
positively
b)
negatively
11.
Which of the following is a subatomic particle with no charge that is found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
12.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
13.
Which statement about the atomic nucleus is correct?
a)
The nucleus is made of protons and neutrons and has a negative charge.
b)
The nucleus is made of protons and neutrons and has a positive charge.
c)
The nucleus is made of protons and neutrons and has a neutral charge.
d)
The nucleus is made of protons only and has a positive charge
14.
Which determines the mass of an element?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Only Protons and Neutrons
15.
If an atom has an equal amount of Protons and electrons, what will its’ charge be?
a)
Positive
b)
Negative
c)
Neutral
d)
Infinite
16.
What do neutrons most contribute to in an atom?
a)
Atomic Number
b)
Charge
c)
Mass
d)
Weight
17.
Which statement is most accurate about protons
a)
They have a positive charge
b)
They occupy the orbitals
c)
They have a negative charge
d)
They are extremely small
18.
What subatomic particles are located in the electron cloud?
a)
quarks
b)
protons
c)
electrons
d)
neutrons
19.
Carbon 14 has how many protons?
a)
6
b)
7
c)
8
d)
9
20.
Isotopes have a different what?
a)
Atomic Number
b)
Atomic Mass
c)
Number of Protons
d)
Number of electrons
21.
Isotopes all have the same number of ___________
a)
Neutrons
b)
Protons
c)
Atomic Mass
d)
Isotope
22.
Which of these phrases best describes an atom?
a)
a positive nucleus surrounded by a hard negative shell
b)
a positive nucleus surrounded by a cloud of negative charges
c)
a hard sphere with positive and negative charges on the outside
d)
a negative nucleus surrounded by protons and neutrons
23.
Which of the following particles has the smallest mass?
a)
neutron
b)
proton
c)
nucleus
d)
electron
24.
What is true about an atom?
a)
Most of the space in an atom is taken up by the nucleus
b)
Atoms are mostly empty space
c)
Atoms have no mass
d)
Electrons have much more mass that protons or neutrons.
25.
Atoms are neutral because they have the same number of
a)
protons and neutrons
b)
protons and electrons
c)
electrons and neutrons
d)
protons and valence electrons
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