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WorksheetsMatter Unit Test Review
Total questions: 60
Worksheet time: 42mins
The positive particle in an atom.
proton
neutron
electron
electron cloud
How many protons does Nitrogen have?
7
8
14
14.01
Which of the labeled structures is a neutron?
a
b
c
What is the mass number of this element?
7
8
14
14.01
Which of the labeled structures is an electron?
a
b
c
Which of the labeled structures is a proton?
a
b
c
What is the chemical symbol of this element?
79
Au
AU
gold
All matter is made of _________.
Identifies the number of protons in an atoms nucleus.
Electron Cloud
Atomic Theory
Atomic Number
Mass Number
Students in Mrs. Clark's science class are investigating a substance that has the following properties
-shiny
-bends easily
-hard, not easily broken
Based on these properties how would you classify the substance?
metal
nonmetal
metalloid
What are the three main groups of the periodic table?
groups
metal
nonmetals
metalloids
periods
What are the vertical columns on the periodic called?
groups
periods
nonmetals
metals
metalloids
What do the vertical columns on the periodic table tell us?
The number of orbitals
The number of valence electrons (electrons on the outer most shell)
What are the horizontal rows on the periodic table called?
periods
groups
metals
nonmetals
metalloids
What do the horizontal rows on the periodic table tell us?
The number of orbitals
The number of valence electrons (the electrons on the outer most shell)
How do you calculate the number of neutrons? *
Mass = Atomic number - Neutrons
Mass - Atomic number = Neutrons
Atomic number = Neutrons
What is the name of the element? (Periodic table will be needed)
sodium
magnesium
vanadium
How many protons and electrons does nickel have?
28
58.69
How many valence electrons and energy levels does (Pb) lead have?
4 valence electrons and 6 energy levels (orbitals)
6 valence electrons and 4 energy levels (orbitals)
5 valence electrons and 5 energy levels (orbitals)
5 valence electrons and 10 energy levels (orbitals)
The periodic table is organized into columns called _______ and rows called ______.
groups and periods
periods and groups
categories and periods
categories and groups
Name this group: These metals are the most reactive.
Name this group: These metals are the second most reactive.
I am a metal
I am in group 2
I am in period 6
I am…
Mo
Re
S
Ba
Find an element with similar chemical properties to Barium (Ba).
Ca an Ra, because they are in the same group and have similar chemical properties.
Cs and La, b/c they are in the same period number.
Ca and Y, b/c they are 90 degree angle and have similiar properties.
Which elements are shiny?
metals only
nonmetals only
metals and nonmetals
metals and MAYBE metalloids
Which elements are to the right of the zig zag?
metals
nonmetals
metalloids
Sulfur is considered:
malleable
brittle
ductile
a good conductor
copper can be used to make statues like the statue of liberty
therefore copper is malleable
therefore copper is ductile
therefore copper is shiny
therefore copper is a conductor
Which elements are colored red?
nonmetals
metals
metalloids
Which of these was NOT a conductor?
sulfur
magnesium
zinc
aluminum
Substances that can be hammered into thin sheets are:
metals
nonmetals
both metals and nonmetals
Metal
Nonmetal
Metalloid
Metal
Nonmetal
Metalloid
A property that is observed without making changes to the substance.
Chemical Reaction
Chemical Property
Physical Property
Physical Reaction
Which of the following is an example of a chemical change?
Cutting paper
Sugar burning
Freezing water
What kind of change is a burning candle?
chemical change
physical change
What kind of change an exploding firework?
physical change
chemical change
a banana rotting is what type of change?
chemical change
physical change
Ice cream melting is what type of change?
chemical change
physical change
Cutting a pizza into 8 separate slices is what type of change?
chemical change
physical change
Chemical changes create ...
new atoms
new chemicals
new shapes
Signs that a chemical change has occurred are:
(check all that apply)
producing a gas
color change
releasing heat, light and sound energy
making an odor
If you want to separate a mixture, you need to use ...
only physical changes
only chemical changes
physical and chemical changes
Look at the picture:
What kind of change is this?
physical change
chemical change
neither physical change nor chemical change
Look at the picture:
How do you know that mass is conserved?
There are the same number and color of atoms on both sides of the arrow.
There are more atoms on one side of the arrow than on the other side.
The atoms are different colors on one side of the arrow.
Jey has a piece of toast that measures 50 grams. She adds 20 grams of peanut butter to it. What is the total mass of the peanut butter toast?
50 g
70 g
30 g
Check all signs of chemical change:
Burning
Unexpected color change
Precipitate forms
Change in shape
If the mass of a chemical reaction's product is 15 grams, what would the mass of the reactants be?
20 g
15 g
10 g
3 g
Why does this picture demonstrate the Law of Conservation of Mass?
the number of atoms of each element are the same on both sides
they start out separate and end up combined
the same elements are used
it doesn't demonstrate the Law of Conservation of Mass
If a chemical reaction occurs in an open system (not contained), what might happen to the measurable mass of the products when compared to the reactants?
the measurable mass might decrease because any gas produced can escape (the actual mass would stay the same)
the mass would increase because mass was created
the measurable mass would stay the same because nothing would be able to leave the system.
it depends on the type of reaction
In a balanced chemical equation, if there are 4 Hydrogen in the reactants, how many Hydrogen should be in the product?
1
2
3
4
What is the Law of Conservation of matter?
Matter is created in a chemical reaction
Matter is created in a physical change
New chemicals formed from a chemical reaction have a larger overall matter than the original reactants
Matter is never created or destroyed
