WorksheetsPhysical Science Final Exam Review
Total questions: 30
Worksheet time: 15mins
Matter with a definite volume and shape is a
Solid
Liquid
Gas
Plasma
When two or more substances are physically combined, the result is a(n)
Chemical change
Element
Compound
Mixture
A type of matter formed by chemically joining two or more elements is known a
Compound
Solution
Colloid
Suspension
The color of ink is a
physical change
physical property
chemical change
chemical property
Which of the following is NOT an example of a chemical change?
iron rusting
cutting paper
piece of wood burning
baking a cake
Which of the following is a transition metal?
Calcium
Nickel
Aluminum
Tellurium
At room temperature, most metals are
solids
liquid
gases
plasma
What charge do electrons have?
Positive
Neutral
Negative
What charge to protons have?
Positive
Neutral
Negative
Atoms of the same element that have different numbers of neutrons are called
Molecules
Ions
Protons
Isotopes
What element has the atomic symbol Na?
Nickel
Sodium
Tin
Lead
Where are electrons located in the atom?
Nucleus
Electron cloud
Neutron
Molecule
In an electrically neutral atom, the number of protons is ___ the number of electrons.
Greater than
Less than
Equal to
Twice
The properties of a compound are ____ the properties of the elements that form it.
Similar to
Different from
Identical to
Derived from
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
2
4
6
8
Why do noble gasses rarely form compounds?
Because they are already stable
Because they are unstable
Because they are gasses
Because they want to form compounds
Why do elements form compounds?
To become less stable
To become more stable
To gain protons
To lose protons
Which of the following is a similarity between ionic and covalent bonds?
Both include the gaining and losing of electrons
Both include the sharing of electrons
Both make the elements more stable
Both are typically found as solids at room temperature
Which of the following is the reason why atoms of sodium and chlorine attract each other in a salt crystal?
Sodium has a positive charge and chlorine has a negative charge
Sodium has a negative charge and chlorine has a positive charge
Both have a positive charge
Both have a negative charge
Which pair of atoms will combine with each other and form an ionic bond?
C and O
C and H
Ca and Mg
Ca and Br
How does an atom of aluminum become an ion?
It gains 3 electrons
It loses 3 electrons
It gains 3 protons
It loses 3 protons
The law of Conservation of Mass states
Mass never stays constant
Mass is always added during a chemical change
Mass is always lost during a chemical change
Mass is not lost or created during a chemical change
The equation H2 + O2 -> H2O is unbalanced. When balanced, what is the correct coefficient for H2O?
1
2
3
4
The compounds before the arrow in a chemical equation are called
reactants
coefficients
products
subscripts
The compounds after the arrow in a chemical equation are called
reactants
coefficients
products
subscripts
The numbers that go before symbols and formulas in a chemical equation are
products
coefficients
reactants
subscripts
A(n) _______________ chemical equation has the same number of atoms of each element on each side of the equation.
unbalanced
balanced
simple
complex
How many atoms of oxygen are represented in Ca(NO3)2 ?
3
6
10
12
When a wood fire burns, it releases heat into the environment. This type of reaction is
endothermic
exothermic
endergonic
exergonic
The symbol (s) written after a formula in a chemical equation stands for
solid
liquid
gas
aqueous
