what determines the reactivity of an element?

valence (outer shell) electrons

An atom of the same kind with different amount of neutrons

Why is Group 1 the most reactive group of all the other groups on the Periodic Table?

the elements in Group 1 all have 1 valence electron, making them unstable

Elements in the same group

Have similar chemical and physical properties

What is the atomic mass?

The number of protons plus the number of neutrons

Why are noble gases inert?

They have a full valence shell (outer shell)

Elements in the same group have _____

same number of valence electrons

The atomic number of a neutral/stable element is the same as:

number of protons and number of electrons

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Periodic Table

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Questions 20

Answers

1
How does Na form with Cl to make NaCl?
shares 2 pairs of electrons
Give and take of 2 electrons
Shares 1 pair of electrons
Give and take of 1 electron
2
The positive charged subatomic particle is
electron
proton
neutron
quark
3
What is an atom?
The result of a chemical reaction
Corrosive substances
Mixture of compounds
Smallest unit of matter
4
what determines the reactivity of an element?
valence (outer shell) electrons
atomic mass
protons
neutrons
5
What is an isotope?
An atom of the same kind with a different amount of protons
An atom of the same kind with different amount of electrons
FAKE WORD
An atom of the same kind with different amount of neutrons
6
Why is Group 1 the most reactive group of all the other groups on the Periodic Table?
the elements in Group 1 all have 1 valence electron, making them unstable
Group 1 elements don't react w/other elements, making them very reactive
the elements in Group 1 all have 8 valence electrons, making them stable
the elements in Group 1 don't have any valence electrons
7
Elements in the same group
Do not have similar chemical and physical properties
Have similar chemical and physical properties
Do not have similar chemical properties
have similar chemical properties
8
What is the atomic number?
Number of neutrons
Number of protons
Number of electrons
9
What is the atomic mass?
The number of neutrons
The number of protons
The number of protons plus the number of neutrons
The number of protons plus the number of electrons
10
What is an item located on the periodic table called? (Ca, O, etc)
Atom
Compound
Mixture
Element
11
Most reactive metals
Group 7
Group 1
Group 8
Group 2
12
Group 1 elements can be found in nature
False
True
13
Which particle has a negative charge?
Ultron
neutrons
protons
electrons
14
What subatomic particles are in the nucleus?
Protons + Neutrons
Electrons + Neutrons
Protons + Electrons
Protons + Neutrons + electrons
15
In the "Modern Cloud Model" of an atom, what subatomic particles are in the clouds?
protons
protons and neutrons
electrons
neutrons
16
Why are noble gases inert?
They feel fulfilled in life.
They have a full valence shell (outer shell)
They are colorless and odorless.
They are gases.
17
Elements in the same group have _____
same number of valence electrons
same state of matter
same number of electrons
same atomic radius
18
What changes in isotopes?
the numbers of neutrons
the number of electrons
the number of atoms
the number of protons
19
__________________ have a neutral charge.
electrons
protons
neutrons
atoms
20
The atomic number of a neutral/stable element is the same as:
number of protons and number of neutrons
number of protons and number of electrons
atomic mass and number of neutrons
atomic mass and number of electrons

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