WorksheetsZero Replacement
Total questions: 78
Worksheet time: 59mins
Where can protons and neutrons be found in an atom?
On orbitals
On the outside ring
Inside the nucleus
Next to the nucleus
A neutron has what charge?
Positive
Negative
Neutral
Where can electrons be found?
On orbitals
In the nucleus
In the middle
Atoms are..
Really Big
Medium-sized
Small
So tiny you cannot see them
A proton has what charge?
Positive
Negative
Neutral
A neutron has what charge?
Positive
Negative
Neutral
How many protons does Potassium (K) have?
19
39
20
58
How many protons does this atom have?
6
12.011
18.011
I have no idea
Mass Number =
protons plus electrons
protons plus neutrons plus electrons
neutrons plus electrons
protons plus neutrons
Atomic Number =
protons plus neutrons
number of protons
number of neutrons
number of electrons in a charged atom
The nucleus contains
protons and neutrons
protons, neutrons, and electrons
protons only
electrons
An atom has 5 protons, 5 neutrons, and 6 electrons it has a mass number of
5
10
16
11
In a neutral atom the number of _______ equals the number of _______.
protons, neutrons
neutrons, electrons
protons, electrons
This subatomic particle identifies the element.
electron
proton
neutron
ion
This subatomic particle holds the atom together.
proton
neutron
electron
This subatomic particle determines reactivity.
electron
proton
neutron
The rule of 8 states.
all atoms want 8 protons
all atoms want a full outer shell of electrons, in general 8 outer shell electrons
all atoms want 8 neutrons
Who invented the Periodic Table?
Mendeleev
Bohr
Lewis
Democritus
As you move left to right on a row or period what happens?
Atomic number increases by 1
Electrons decrease
Number of shells decrease
Nothing
What happens to the number of shells as you move down a group?
They decrease by 1
They increase by 1
Nothing
The first energy shell can hold ______ electrons.
2
8
18
All elements in the same row have the same number of shells.
True
False
Sometimes
Valence means......
inside
outside
full
What do all elements in the same period have?
same number of shells
same number of electrons
belong in the same family
noble gases
A chemical change...
Changes the physical properties of an object, but does not create a new substance.
Creates a new substance and cannot be undone.
A physical change...
Changes the physical properties of an object, but does not create a new substance.
Creates a new substance and cannot be undone.
Which of the following options provides evidence of a CHEMICAL change?
Wood is burned releasing ash and smoke
Rocks separate when soil is sifted
Water turns to ice when you put it in the freezer
Salt dissolves in water
Which of the following examples provides evidence of a PHYSICAL change?
Wood is burned and releases ash and smoke
Iron rusts over time
When mixed, baking soda and vinegar form gas bubbles
A piece of paper changes shape when you rip it up
A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?
Physical change
Chemical change
No change
Identify the change:
Wood burning
Physical
Chemical
Bending metal
Physical Change
Chemical Change
Boiling Water
Physical Change
Chemical Change
Ice cream melting
Physical Change
Chemical Change
A property that can be observed or measured without changing the composition of the substance
Physical Property
Chemical Property
A characteristic of a substance to change into a new substance
Chemical Property
Physical Property
