Font size
S
M
L
XL
WorksheetsThe atom!
Total questions: 22
Worksheet time: 11mins
Name
Class
Date
1.
Which of the following is NOT a property of electrons?
a)
Mass 1.840 times smaller than hydrogen atom
b)
Small size
c)
Negative charge
d)
Part of the nucleus
2.
What is the role of neutrons in determining atomic mass?
a)
They give the number of protons
b)
They give the size of the atom
c)
They give the charge of the atom
d)
They give the mass of the atom
3.
What is the mass of a neutron compared to a proton?
a)
Really large
b)
Slightly larger (but similar)
c)
Slightly smaller (but similar)
d)
Really small
4.
What is the charge of a proton?
a)
Negative
b)
No charge
c)
Positive
d)
Neutral
5.
What is the atomic mass of an element?
a)
The sum of protons, electrons and neutrons
b)
The average mass of the mass numbers of its isotopes
c)
The number of electrons
d)
The number of protons
6.
What is the charge of an cation?
a)
Positive
b)
Negative
c)
Neutral
d)
No charge
7.
What is the mass of an electron compared to a proton?
a)
Negligible
b)
Equal
c)
1.840 times smaller
d)
1.840 times larger
8.
What causes electrical phenomena in matter?
a)
Gravity
b)
Friction
c)
Magnetism
d)
Electric charge
9.
Why do electrons move around the nucleus of an atom?
a)
Due to gravity
b)
Due to magnetism
c)
Due to common sense (o "cultura general")
d)
Due to attraction
10.
What is the charge of an electron?
a)
No charge
b)
Negative
c)
Positive
d)
Neutral
11.
What is the atomic number (Z) of an atom?
a)
The number of neutrons
b)
The number of protons
c)
The number of electrons
d)
The sum of protons and neutrons
12.
What is the mass number of an atom?
a)
The number of protons
b)
The number of neutrons
c)
The sum of protons and neutrons
d)
The number of electrons
13.
What is the charge of a neutron?
a)
No charge
b)
Positive
c)
Negative
d)
Neutral
14.
Which of the following is NOT a property of protons?
a)
Positive charge
b)
Part of the nucleus
c)
Similar mass to hydrogen atom
d)
Negative charge
15.
What is the relationship between the mass number and the atomic number?
a)
They are equal
b)
They are proportional
c)
They are opposite
d)
They are irrelevant
16.
What is the role of electrons?
a)
They give the mass of the atom
b)
They give the weight of the atom
c)
They give the number of protons
d)
They give the charge of the atom
17.
What is the relationship between the atomic number and the number of electrons in a neutral atom?
a)
They are equal
b)
They are irrelevant
c)
They are opposite
d)
They are proportional
18.
What is the difference between an atom and an ion?
a)
An atom has no charge, an ion has a charge
b)
An atom has a larger mass than an ion
c)
An atom has a negative charge, an ion has a positive charge
d)
An atom has a positive charge, an ion has a negative charge
19.
If we have a neutral atom with Z = 6, choose the corect answer
a)
6 protons
b)
6 protons and 6 electrons
c)
6 protons, 6 electrons and 6 neutrons
d)
Neutrals
20.
The atomic number (Z) of Na (Sodium) is 3. If we have the cation Na+ , choose the correct answer:
a)
3 protons and 3 electrons
b)
3 protons and 2 electrons
c)
3 protons and 4 electrons
d)
¡Esto lo "emos dao"!
21.
Imagine that you have a neutral atom with A=8 and Z=4. Choose all the correct answers:
a)
8 protons
b)
4 protons
c)
4 neutrons
d)
4 electrons
e)
8 electrons
22.
Oxygen (Z=8) frequently forms ANIONS. For example, it is easy to find O2- in nature. Choose the correct answer:
a)
That anion has 6 electrons
b)
That anion has 8 electrons
c)
That anion has 10 electrons
d)
That anion has 12 electrons
e)
What?! I dunno. I choose a meme instead
Reset
