Where is all of the mass of an atom located?

In the nucleus (proton and neutron)

What is the definition of an atom?

The smallest unit of an element/building block of matter

What is a valence electron?

The number of electrons in the outermost shell

What do period numbers tell you about and element?

How many energy levels they have.

What do the group numbers tell you about an atom?

How many valence electrons they have.

Nonmetals are located...

On the right of the zig-zag line on the periodic table

How is the periodic table arranged?

By increasing atomic number from left to right

What is not true about an element?

It can be broken down into smaller substances.

What makes up the mass of an atom?

The number of protons and neutrons

Metals are located...

On the left of the zig-zag line on the periodic table

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8th Grade Atoms and PTE

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An atomic structure and periodic table review

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Questions 25

Answers

1
Where is all of the mass of an atom located?
In the nucleus (proton and neutron)
In the nucleus (electron and neutron)
In the nucleus (proton and electron)
Outside of the nucleus (electron)
2
What is the definition of an atom?
The biggest unit of an element
The smallest unit of an element/building block of matter
3
What is a valence electron?
The number of electrons that are in the nucleus
The number of electrons in the innermost shell
The number of electrons in the outermost shell
4
Where would you find elements that react similarly?
On opposite sides of the table
In the same period
Diagonally across from each other
In the same group
5
What is the charge and mass of a neutron?
Positive and 1 amu
Negative and 1 amu
Neutral and 1 amu
Neutral and 0 amu
6
What do period numbers tell you about and element?
# of valence electrons
How many energy levels they have.
# of neutrons
# of protons
7
What is the charge of an atom that has an equal # of protons and electrons?
Negative
Neutral
Positive
8
Metalloids are located...
On the left of the zig-zag line on the periodic table
Along the zig-zag line
On the right of the zig-zag line on the periodic table
9
Periods are ...
Horizontal
Vertical
10
What is the charge and mass of an electron?
Negative and 1 amu
Negative and about 0 amu
Positive and 1 amu
11
What do the group numbers tell you about an atom?
How many neutrons they have.
How many protons they have.
How many energy levels they have.
How many valence electrons they have.
12
What is the charge and mass of a proton?
Neutral and 1 amu
Positive and 0 amu
Negative and 1 amu
Positive and 1 amu
13
Nonmetals are located...
On the right of the zig-zag line on the periodic table
Along the zig-zag line
On the left of the zig-zag line on the periodic table
14
What two subatomic particles are in the nucleus
protons and neutrons
neutrons and electrons
protons and electrons
15
An atom of Silicon has a mass of 28 and has 14 protons. How many neutrons does it have?
15
28
42
14
16
How is the periodic table arranged?
By increasing atomic number from left to right
Alphabetically
By decreasing atomic number from left to right
By element symbol.
17
What is not true about an element?
It cannot be broken down into smaller substances.
Two or more of them are called compounds.
It can be broken down into smaller substances.
18
The nucleus of an atom has a...
Negative charge
Neutral charge
Positive charge
19
What makes up the mass of an atom?
The number of protons and neutrons
The number of electrons and neutrons
The number of protons and electrons
20
Groups are ...
Horizontal
Vertical
21
What is represented by the number of protons in the nucleus?
atomic number
number of valence electrons
neutrons
atomic mass
22
Protons and neutrons...
Have almost the same mass
Have vastly different masses
Are smaller than electrons
23
What subatomic particle is located outside the nucleus?
atomic mass
electron
proton
neutron
24
Metals are located...
On the right of the zig-zag line on the periodic table
Along the zig-zag line
On the left of the zig-zag line on the periodic table
25
What is the smallest subatomic particle with the least amount of mass?
electron
neutron
proton

8th Grade Atoms and PTE Flashcards | StudBud