Font size
WorksheetsChemistry, Grade 7
Total questions: 19
Worksheet time: 19mins
What are the characteristics of matter?
Has mass.
Takes up space.
Is important to people.
Has color.
What is true of a neutron?
It is a neutral color.
It has no electric charge.
It is found inside the nucleus.
It is responsible for the atomic number.
What is true of an electron?
It is found inside the nucleus.
It has a mass of 0.
It orbits in a cloud.
It has a negative charge.
What is true of a proton?
It has a positive charge.
It has a negative charge.
It is found in the nucleus with neutrons.
It has a mass of 1.
What is true of an element?
It has only one kind of matter in it.
It can have the same atomic number as other elements.
It is made up of identical atom.
It can be made of different kinds of atoms.
This is a substance that has two or more kinds of atoms in it.
Nucleus
Atom
Compound
Element
The smallest unit of a substance that still has the characteristics of that substance
Nucleus
Compound
Element
Atom
The nucleus is made of
protons, neutrons, and electrons.
protons.
protons and neutrons.
neutrons.
Atomic number is the
number of different elements in a compound.
number of protons plus neutrons in an atom.
number of protons in an atom (which is also the number of electrons)
number of protons in an atom.
Atomic mass (or mass number) is the
number of protons in an atom.
number of protons plus neutrons in an atom.
number of electrons plus protons in an atom.
number that tells which element it is.
Which of the following are not electrically sensitive (i.e., conduct electricity)?
gold
carbon
silver
copper
Which are examples of a compound?
Water (H2O)
Gold (Au)
Silicon (SiO2)
Carbon (C)
Which are examples of an element?
Water
Sand
Silver
Carbon dioxide
A chemical formula states
how large an atom's nucleus is.
the charge of an atom.
the number and type of atoms in each element or compound.
only the types of atoms present in each element or compound.
Which is true?
Oxygen has eight protons.
Oxygen has eight electrons.
Oxygen has an atomic mass of 8.
Oxygen has an atomic number of 8.
Oxygen has an atomic mass of _____; this it the number of _____.
about 16; protons and neutrons.
8; protons.
about 16; neutrons.
about 16; protons and electrons.
The following things are shown for each element on the periodic table.
Atomic mass
Atomic number
Chemical symbol
Compound formula
Which of the following are true?
Electrons are found in the orbit; protons and neutrons are found in the nucleus
Electrons have no mass; protons and neutrons each have a mass of 1
Neutrons have a positive charge; electrons have a negative charge; protons have no charge
Neutrons have no charge; electrons have a negative charge; protons have a positive charge
Which are true?
Two elements can have the same number of protons.
Two elements can have the same number of electrons.
Two elements can be made of the same type of atom.
None of the above are true.
