What is nuclear decay?

The nucleus of an atom trying to becomed balanced

How do you determine the number of neutrons in an atom?

By subtracting the atomic number from the atomic mass

What's the difference between an ion and an isotope?

Ion= electron change and isotope= neutron change

Dalton's atomic theory states:

Atoms cannot be divided or destroyed

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Atom Exam 1

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Atoms, atomic theory, sub-atomic particles, radiation

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Questions 22

Answers

1
If Cl releases a beta particle, what happens next?
It turns into Sulfur
It turns into Ar (Arsenic)
Nothing
It turns into P (Phosphorus)
2
What happens when a gamma ray is released?
Energy is released and the element changes
Nothing
Energy builds in the electron cloud
Energy is released
3
How many protons does a neutral atom of Oxygen have?
7
6
9
8
4
What's a cation?
An ion with a positive charge
An atom with no electrons
A molecule
An ion with a negative charge
5
What are the three sub-atomic particles in an atom?
Protons, neutrons, electrons
Neutrons, electron cloud, protons
Neutrons, protons, particles
Electrons, neutrons, atoms
6
What's the foundational piece of matter?
Atoms
Cells
Hydrogen
Molecules
7
A car has the density of 12g/cm3 and a volume of 10ml. What's its mass?
120 g
120 ml
100 g
120 in
8
What are the main structures of the atom?
Nucleus, proton, empty space
Nucleus and electron cloud
Electron cloud and empty space
Nucleus
9
What is the official name of a negative ion?
Cation
Onion
Antion
Electron
10
Which part of the atom is the most dense?
The nether region
Electron cloud
The nucleus
Empty space
11
What is nuclear decay?
The nucleus of an atom trying to becomed balanced
Cells growing a mind of their own
Cookies
Your tooth rotting out of your mouth
12
How do you determine the number of neutrons in an atom?
By subtracting the atomic mass from the atomic number
By concentrating really hard
By adding the atomic number to the atomic mass
By subtracting the atomic number from the atomic mass
13
What's the purpose of a neutron?
To balance charges
To release stored particles
To take up empty space
Mass
14
What does the atomic number of an element tell you?
The number of neutrons
The amount of vocab words you copy everyday
The number of electrons
The number of protons
15
What charge does a neutron have?
Positive
No charge
Yeti
Negative
16
What's the difference between an ion and an isotope?
There is no difference
Ion= proton change and isotope= electron change
Ion= electron change and isotope= neutron change
Isotope= proton change and ion= electron change
17
An atom of Mg has a charge of 2+. How many electrons does it have?
10
12
9
8
18
What's an anion?
A decaying onion
A chemical compound
A molecule
A negative ion
19
Once an alpha particle is released, the element....
Changes into another element
Is destroyed
Is split in half
Changes into a death ray
20
Dalton's atomic theory states:
Atoms cannot be divided or destroyed
Molecules contribute to radiation
Taking notes in class is a waste of time
Atoms consist of protons and electrons
21
What's an ion?
An atom with more neutrons
It depends on the atomic number
An atom with a charge
An atom with different average mass numbers
22
How can you tell the difference between two atoms?
The electron cloud
The number of neutrons
The number of protons
The number of electrons

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