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WorksheetsBuilding Blocks of Matter: Atoms
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
In the 19th century, John Dalton theorized that matter is made up of small indivisible units called atoms, but modern atomic theory states that atoms can be divided into particles like electrons, protons and neutrons. It can be concluded that _____.
a)
modern theories cannot be improved further
b)
the structure of atoms has changed over the last century
c)
Dalton's theory explained atoms in a better manner
d)
Dalton's theory was improved by further studies
2.
A student claims that a rock, a glass of water, and air are all made of atoms. Is the student correct?
a)
Yes; they are all made of the same type of atom.
b)
Yes; they are all made of different types of atoms.
c)
No; only the rock and the water are made of atoms. The air is not because it is a gas.
d)
No; only the rock is made of atoms. The water and air are not because they are not solid.
3.
A student looks through a microscope at a drop of water. The student claims to see both hydrogen and oxygen atoms. What is wrong with this claim?
a)
Water is not made of atoms.
b)
Water does not contain hydrogen atoms.
c)
Atoms cannot be seen with a microscope.
d)
Hydrogen and oxygen are not types of atoms.
4.
Which are not a part of atoms?
a)
neutrons
b)
protons
c)
electrons
d)
molecules
5.
Positively charged and neutral particles are located in the nucleus. Negatively charged particles are located outside the nucleus. What does the statement indicate?
a)
Protons are located around the nucleus.
b)
Electrons are located inside the nucleus.
c)
Protons and neutrons are located inside the nucleus.
d)
Electrons and protons are located inside the nucleus.
6.
Carbon has two forms, P and Q. The atomic number of both the forms is 6. Mass numbers of the two forms is 12 and 13 respectively. What will the number of protons for atoms of the two forms of carbon be?
a)
P=6, Q=6
b)
P=6, Q=7
c)
P=7, Q=7
d)
P=12, Q=13
7.
A student drew this model of an atom.
What is wrong with the model?
What is wrong with the model?
a)
All of the neutrons should be on the same ring.
b)
The particles with a positive charge are neutrons.
c)
The electrons and the neutrons are in the wrong place.
d)
All of the particles in the middle should have a positive charge.
8.
Which sentence about the model is true?
a)
It is an atom with a nucleus, two protons, and ten electrons.
b)
It is a molecule with four different atoms that share some orbits.
c)
It is a molecule with electrons shared by two types of atoms.
d)
It is an atom with one proton, ten neutrons, and two electrons.
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