WorksheetsAtoms Molecules and Compounds
Total questions: 21
Worksheet time: 15mins
What is an element?
Two or more atoms joined together.
One of over 100 types of atoms
Two or more different elements joined together.
A particle with no charge found in the nucleus of an atom.
What is a molecule?
two elements bonded together (sharing electrons)
a mixture of different substances
smallest individual particles
salt mixed in water
What is a compound?
Two different elements bonded together.
Two of the same elements bonded together.
A mixture of different substances.
Two substances stuck together with glue.
What two subatomic particles are found in the nucleus?
proton and electron
electron and neutron
neutron and proton
neutron and electron
What is the proton?
a negatively charged particle that orbits the nucleus
a neutral particle found in the nucleus
a positively charged particle found in the nucleus
a neutral particle that orbits the nucleus
What is the electron?
a negatively charged particle that orbits the nucleus
a neutral particle found in the nucleus
a positively charged particle found in the nucleus
a neutral particle that orbits the nucleus
What is the neutron?
a negatively charged particle that orbits the nucleus
a neutral particle found in the nucleus
a positively charged particle found in the nucleus
a neutral particle that orbits the nucleus
What is the chemical symbol of the element Hydrogen?
Hy
H
Hydro
Hg
Which of the following is a chemical formula?
H2SO4
Si
Hg
C
Which of the following is a chemical symbol?
H2O
O
NaCl
FeO
What is the chemical symbol for the element Carbon?
C
Ca
Carb
CO
What is the chemical symbol for the element mercury?
Hg
Merc
MeC
MY
An atom has 4 protons.
How many electrons does it have if the atom has a -1 charge?
6
5
4
3
What is an ion?
a charged atom
an atom with different neutrons
atoms with no protons
atoms with no electrons
Where are electrons found?
the nucleus
next to the neutrons
the proton
orbiting the nucleus
The _____________ has a negative charge.
proton
electron
positron
neutron
The _______________ has a positive charge.
electron
proton
neutron
quark
Which is a molecule?
C
CO
He
Li
Where is the proton found?
orbit
nucleus
___________ combine together to form molecules.
atoms
compounds
mixtures
pikmon
Which of the following is the largest?
atom of carbon
atom of uranium
molecule of sugar
hydrogen atom
