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WorksheetsAtoms
Total questions: 15
Worksheet time: 5mins
Name
Class
Date
1.
Atom 1 has Mass=12 Protons=6
Atom 2 has Mass= 14 Electrons=6
Are these atoms isotopes of each other or different elements?
Atom 2 has Mass= 14 Electrons=6
Are these atoms isotopes of each other or different elements?
a)
Different Elements - Mg & Si
b)
Different Elements - Ar & Ca
c)
Isotopes of Carbon
d)
Isotopes of Magnesium
2.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
3.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
4.
What is the mass of a proton and a neutron?
a)
1amu
b)
2grams
c)
13amu
d)
10cm
5.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
6.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
7.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
8.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
9.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
10.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
11.
With the gold foil experiment, Rutherford concluded that...
a)
atoms were mostly empty space
b)
atoms contained no charged particles
c)
electrons were in the nucleus
d)
protons were in orbitals
12.
Which 2 particles have about the same mass and contribute the entire mass of the atom?
a)
protons & neutrons
b)
neutrons and electrons
c)
protons and electrons
13.
calculate the proton number of Se-2
a)
79
b)
34
c)
45
d)
111
14.
The smallest particle of an element.
a)
Element
b)
Molecule
c)
Atom
15.
A substance that cannot be broken down into other substances by chemical or physical means.
a)
Covalent bond
b)
Atom
c)
Element
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