WorksheetsAtoms and Elements
Total questions: 34
Worksheet time: 17mins
Name
Class
Date
1.
What is at the center of every atom?
a)
a nucleus
b)
an electron
c)
a compound
d)
a molecule
2.
Which two particles make up the nucleus of an atom?
a)
protons and neutrons
b)
protons and electrons
c)
molecules and compounds
d)
neutrons and electrons
3.
What is the role of an electron in an atom?
a)
Electrons circle the nucleus and have a negative charge.
b)
Electrons live inside the nucleus and carry a neutral charge.
c)
Electrons circle the nucleus and have a positive charge.
d)
Electrons live inside the nucleus and have a negative charge.
4.
In an atom, what is the number of protons usually equal to?
a)
the number of electrons
b)
the number of neutrons
c)
the number of molecules
d)
the number of nuclei
5.
Which of the following determines the type of element that an atom makes?
a)
the number of protons
b)
the size of the nucleus
c)
how much the atom weighs
d)
the number of neutrons
6.
What forms when two atoms combine?
a)
a molecule
b)
a nucleus
c)
a proton
d)
an electron
7.
What is a compound?
a)
a molecule that is formed from two or more different types of atoms
b)
a tiny particle that makes up all matter
c)
the center of an atom that is formed by neutrons, protons, and electrons
d)
a molecules that is formed from the same type of atoms
8.
What is the significance of the periodic table of elements?
a)
It predicts and lists all the chemical elements in the universe
b)
It lists all the different metals known to humans
c)
It explains where different atoms can be found
d)
It proves that atoms are the building blocks of matter
9.
What do electrons in the same shell have in common?
a)
They have the same amount of energy
b)
They are all made up of atoms
c)
They are all positively charged
d)
They all have neutral charges
10.
Which of the following is an example of a subatomic particle?
a)
Electron
b)
Carbon
c)
Oxygen
d)
Hydrogen
11.
What might happen if the strong force didn't exist?
a)
Atomic nuclei would fly apart
b)
Electrons would have positive charges
c)
It would be more difficult to split atoms
d)
Neutrons would not exist
12.
What two types of particles exist within an atomic nucleus?
a)
Protons and neutrons
b)
Neutrons and electrons
c)
Protons and neutrinos
d)
Positrons and neutrons
13.
Oxygen has an atomic number of 8. What can you conclude from this fact?
a)
An atom of oxygen has 8 protons.
b)
An atom of oxygen weighs 8 grams.
c)
An atom of oxygen has 4 protons and 4 electrons.
d)
An atom of oxygen has 8 positrons.
14.
The word "atom" comes from a Greek word for "indivisible." In what way are atoms indivisible?
a)
They cannot be broken apart without losing their chemical properties
b)
They cannot be separated once they've bonded with other atoms
c)
They cannot form bonds with other atoms
d)
They cannot gain or lose electrons
15.
How are molecules different from atoms?
a)
They consist of several atoms bonded together.
b)
They do not contain neutrons.
c)
They do not have nuclei.
d)
Their particles do not have electrical charges.
16.
What can you conclude from the fact that electrons orbit far away from atomic nuclei?
a)
Atoms are comprised mostly of empty space
b)
Electrons are extremely small
c)
Protons have a positive charge
d)
Atoms consist of subatomic particles
17.
All matter is made up of tiny particles that are too small to be seen directly through an optical microscope. These tiny particles are known as _______.
a)
atoms
b)
cells
c)
forces
d)
gases
18.
Atoms have mass and take up space. This is because atoms are a type of _______.
a)
matter
b)
physical property
c)
energy
d)
living organism
19.
George is studying a substance that is made out of only one element. This means that
a)
all the atoms in the substance are similar to each other.
b)
the substance does not have any energy.
c)
there are many different types of atoms in the substance.
d)
the substance is too small to be seen with the human eye.
20.
Hydrogen is a pure substance represented by the chemical symbol H. Which of the following best describes hydrogen?
a)
Hydrogen is an element made of only one kind of atom.
b)
Hydrogen is an element made of two or more kinds of atoms.
c)
Hydrogen is a compound made of two or more kinds of atoms.
d)
Hydrogen is a compound made of only one kind of atom.
21.
Silver is an element. Which of these does the classification "element" suggest about silver?
a)
The atoms of silver are all alike.
b)
The atoms of silver are different sizes.
c)
The atoms of silver are each unique.
d)
The atoms of silver are a gas.
22.
Since air is a type of matter, air must be made out of tiny particles that are called _______.
a)
atoms
b)
grains
c)
pebbles
d)
spots
23.
The element oxygen, represented by the symbol O, is classified as
a)
a pure substance.
b)
a solution.
c)
a mixture.
d)
a compound.
24.
The smallest part of any material is the _______.
a)
atom
b)
fragment
c)
molecule
d)
mineral
25.
What does all matter have in common?
a)
It is made up of atoms.
b)
It is made up of molecules.
c)
It is all solid.
d)
It is too small to see.
26.
What is all matter made up of?
a)
atoms
b)
carbon
c)
metal
d)
cells
27.
What is an element?
a)
a substance made of just one kind of atom that cannot be broken down into something simpler
b)
a substance made up of hydrogen and one other kind of atom
c)
a substance made of just one kind of molecule that cannot be broken down into something simpler
d)
a material that is shiny and usually hard and strong
28.
What is the most general name for any single type of matter that is made from a specific arrangement of atoms?
a)
substance
b)
molecule
c)
solid
d)
element
29.
What is the name for the tiny particles that metal is made out of?
a)
atoms
b)
cells
c)
cubes
d)
stars
30.
What is the smallest particle of an element that still has the same chemical properties?
a)
atom
b)
mixture
c)
molecule
d)
compound
31.
What makes the element named iron (Fe) different from the element named nickel (Ni)?
a)
Atoms of iron are different from atoms of nickel.
b)
Iron is made of atoms but nickel is not.
c)
Iron is a solid but nickel is a gas.
d)
The only difference is the name of the element.
32.
Which is a substance made up of only one kind of atom?
a)
an element
b)
a solution
c)
a mixture
d)
a compound
33.
Which of the following best describes what the 118 known chemical elements combine to form?
a)
all the matter in the Universe
b)
all the cells of living organisms only
c)
all of the heat and light from the Sun
d)
all of the energy on Earth
34.
Which part of a material is too small to be seen without being magnified greatly?
a)
an atom
b)
a granule
c)
a bit
d)
a pebble
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