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Atoms
Thomson discovered
What charge does a neutron have?
Atoms
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1
What charge does a neutron have?
positive
neutral
undetermined
negative
2
Thomson discovered
protons
atoms
electrons
nucleus
3
This element contains 15 protons
potassium
oxygen
phosphate
phosphorus
4
Two different isotopes have different
protons
masses
electrons
atomic number
5
Who made the first model of the atom?
Thomson
Democritus
Schtodinger
Dalton
6
Which letter is not a type of orbital?
m
d
s
p
7
Which statement is part of Dalton's atomic theory?
atoms have a nucleus
atoms cannot be divided
atoms are made from electrons
atoms are destroyed
8
Calculate the number of neutrons for Lithium-8
8
3
5
11
9
What charge does an electron have?
neutral
positive
no charge
negative
10
What is the current model of the atom?
Dalton's Model
Rutherford's Model
Quantum Mechanical Model
Bohr Model
11
How many electrons can fit on the second shell of a Bohr model?
18
10
2
8
12
What is the mass of an atom that has 10 protons and 11 neutrons?
10
1
21
11
13
What is in the nucleus?
electrons
protons and electrons
protons
protons and neutrons
14
Why are theories accepted in science?
there is evidence
someone cheats
someone has lots of money
someone is popular
15
What is the atomic number of Beryllium?
5
9
9.012
4
16
Heisenberg uncertainty means we don't know the exact location of an electron
False
True
17
The law of conservation of mass means:
atoms can divide
atoms cannot be destroyed
matter has atoms
different atoms have different properties
18
An atom's mass is the amount of
neutrons
protons and neutrons
electrons
protons
19
Rutherford discovered
electrons
nucleus
atom
protons
20
Isotopes are atoms of the same element that have different
atomic numbers
electrons
neutrons
protons
21
What holds the nucleus together?
nuclear force
gravitational forces
static electricity
magnetic forces
22
What charge does a proton have?
neutral
none
positive
negative
