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WorksheetsUnit 2 - 3 Review: Matter & The Atom
Total questions: 25
Worksheet time: 13mins
a nail rusting
How do you find the number of neutrons an atom has?
Protons + electrons = neutrons
Atomic number + atomic mass = neutrons
atomic number - Protons = neutrons
Atomic mass - atomic number = neutrons
A pure substance that cannot be broken down into any other substance
atom
element
molecule
compound
Two or more different elements that are combined chemically
atom
element
compound
molecule
The particles move loosely around each other. It takes the shape of the container and has a definite volume.
solid
liquid
gas
The particles cannot move freely, they vibrate in place. This has a definite shape and a definite volume.
solid
liquid
gas
Which of the following is a Chemical Property?
solubility
flammability
viscosity
melting point
Which of the three particles has the smallest mass?
proton
neutron
electron
Which particle has a positive electrical charge?
proton
neutron
electron
Which particles make up the nucleus of an atom? (you can choose more than one answers)
proton
electron
neutron
Neutrons have a ____________ charge.
Neutral, or no charge
Positive
Negative
Neutron? I don't know what that is!
This element has how many protons?
59
28
31
81
This element has how many neutrons?
59
28
31
81
This element has a mass number of _.
59
28
31
81
This element has an atomic number of _.
59
28
31
81
This element has how many electrons?
59
28
31
81
This ion has how many protons?
17
18
19
36
This ion has how many electrons?
17
18
19
36
An ion has 10 electrons and 7 protons. What is its ionic charge?
+1
-1
+3
-3
This ion has how many electrons?
10
12
14
24
Isotopes of an element have a different number of...
Protons
Neutrons
Electrons
Which statement is not part of Dalton's atomic theory?
All matter is made up of atoms
In chemical reactions, atoms are rearranged.
The nucleus of the atom has protons and neutrons in it.
Atoms combine in fixed, whole-number ratios to form compounds
Matter is anything that has _ and takes up space
mass
weight
volume
density
Where can electrons be found?
In the nucleus
Orbiting the nucleus
