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WorksheetsAtoms elements and molecules
Total questions: 50
Worksheet time: 28mins
True or False? Neutrons have a negative charge
True
False
True or False? Neutrons have a negative charge
True
False
What is the atomic number of an element with three protons?
2
1
3
6
What does the atomic number represent?
the number of protons and usually electrons too
the number of protons and neutrons
the number of neutrons
How many protons does the element in this image contain?
14
7
15
18
The mass of an atom come from the...
electrons
nucleus
protons
empty space
What two subatomic particles are contained in the nucleus?
Protons + Electrons
Neutrons + Electrons
Atoms
Protons + Neutrons
What is the atomic mass for the element in this image?
14
7
15
18
What is Matter?
anything that has mass
anything that takes up space
anything that has mass and takes up space
What are the three particles that make up the atom?
clouds, positives, negatives
clouds, energy levels, particles
protons, neutrons, electrons
molecules, electrons, protons
How many elements are there in the periodic table?
118
100
226
too many to count
Electrons are located in the
electron cloud
nucleus
molecule
circles
Most of the atoms VOLUME is:
in the electron cloud
in the nucleus
in the protons
in the neutrons
The nucleus of the atom contains the:
protons only
neutrons only
electrons and protons
protons and neutrons
The small, center core of the atom is called the:
proton
electron
neutron
nucleus
The ___________ are moving quickly around the nucleus.
protons
electrons
neutrons
atoms
The symbol (Au) and (C) are both elements. How can you tell they are elements JUST by looking at their symbols?
Both symbols have a lower case letter.
Both symbols have one capital letter.
Both symbols start with a capital letter.
The smallest particle of matter that an element can be broken down into and still have the characteristics of the original element is called:
a compound
a molecule
a proton
an atom
Two different elements will have the same kind of atoms.
True
False
99% of an atoms MASS is:
in the space where you find the electrons
made up of only the neutrons
in the nucleus (where the protons and neutrons are located)
in the electrons
All atoms of silver are alike.
True
False
An element is made up of only one kind of:
atom
molecule
compound
All atoms of the same element are alike.
True
False
All matter is made up of at least one element.
True
False
A single atom of gold has the same properties (characteristics) as a large, gold necklace.
True
False
Atoms are in constant motion.
True
False
Some atoms do not have mass or take up space.
True
False
What part of the atom is the arrow pointing to?
Proton
Neutron
Electron
What part of the atom is the arrow pointing to?
Proton
Neutron
Electron
What part of the atom is the arrow pointing to?
Proton
Neutron
Electron
An element is determined by the number of ________ in its nucleus (also known as its atomic number).
neutrons
electrons
protons
Each chemical element is made up of only one kind of
atom
molecule
electron
neutron
What is the atomic number of this element?
O
8
16
What is the atomic mass of this element?
13
26.982
Al
What is a small particle that is known as the basic building block of matter?
molecule
compound
element
atom
Two oxygen atoms bond together, which vocabulary word best describes this type of matter?
molecule
compound
element
atom
