Chemistry 103 FINAL Actual exam
2026 Approved Questions And
Answers For Guaranteed Pass!
A diatomic molecule is made up of __________ atom(s)?
2
A polyatomic molecule is made up of __________ atom(s)?
many
A monoatomic molecule is made up of __________ atom(s)?
1
The number 10500020 has how many significant figures.
7
Mass does what?
Is a measure of the amount of matter.
A millimeter is how many meters?
.001
How is 0.003405 shown is scientific notation?
3.405 x 10^-3
A pure substance has a __________?
More than one answer is correct.
1.55 x 10^3 multiplied by 2.00 x 10^7 equals.
3.10 x 10^10
A calorie is a measure of what property?
Energy
What properties must be measured to determine density?
mass and volume
,A kilometer is how many meters?
1000
A physical change is __________?
Ice melting to water.
A triatomic molecule is made up of __________ atom(s)?
3
All Matter is made up of __________?
Atoms
Which is an example of a heterogeneous solution?
Pizza
3.5 x 10^3 multiplied by 4.004 x 1^03 equals.
1.4 x 10^7
How many milliliters are in a liter?
1000
A heteroatomic molecule is made up of __________ atom(s)?
different types of
Which is an example of a homogeneous solution?
Black coffee
A homoatomic molecule is made up of __________ atom(s)?
the same type of
What is the molecular weight of O2 (oxygen molecule).
32
What is the molecular weight of table sugar (C12H24O12 )?
360
What is the number of hydrogen atoms in a 18.016 gram sample of water (H2O)?
, 12.04 x 10^23
Determine the number of electrons and protons in the element Tc (Z=43, A=98).
43 protons, 43 electrons
What is the difference between Cu-58 and Ni-58?
2 electron and 2 protons
The symbols for elements with accepted names
consist of either a single capital letter or a capital letter and a small letter.
What is the reason that U-238 is different from U-235?
three more neutrons
Atoms are neutral. How can they have no charge?
equal numbers of protons and electrons
If you have 25.6 g of O2, how many moles of oxygen molecules do you have?
0.800
Which of the following is located in the nucleus of an atom?
proton and neutron
How many moles of N2O contain the same number of nitrogen atoms as 4.60 g of NO2?
0.0500
What is the molecular weight of Na2CO3 ?
106
2026 Approved Questions And
Answers For Guaranteed Pass!
A diatomic molecule is made up of __________ atom(s)?
2
A polyatomic molecule is made up of __________ atom(s)?
many
A monoatomic molecule is made up of __________ atom(s)?
1
The number 10500020 has how many significant figures.
7
Mass does what?
Is a measure of the amount of matter.
A millimeter is how many meters?
.001
How is 0.003405 shown is scientific notation?
3.405 x 10^-3
A pure substance has a __________?
More than one answer is correct.
1.55 x 10^3 multiplied by 2.00 x 10^7 equals.
3.10 x 10^10
A calorie is a measure of what property?
Energy
What properties must be measured to determine density?
mass and volume
,A kilometer is how many meters?
1000
A physical change is __________?
Ice melting to water.
A triatomic molecule is made up of __________ atom(s)?
3
All Matter is made up of __________?
Atoms
Which is an example of a heterogeneous solution?
Pizza
3.5 x 10^3 multiplied by 4.004 x 1^03 equals.
1.4 x 10^7
How many milliliters are in a liter?
1000
A heteroatomic molecule is made up of __________ atom(s)?
different types of
Which is an example of a homogeneous solution?
Black coffee
A homoatomic molecule is made up of __________ atom(s)?
the same type of
What is the molecular weight of O2 (oxygen molecule).
32
What is the molecular weight of table sugar (C12H24O12 )?
360
What is the number of hydrogen atoms in a 18.016 gram sample of water (H2O)?
, 12.04 x 10^23
Determine the number of electrons and protons in the element Tc (Z=43, A=98).
43 protons, 43 electrons
What is the difference between Cu-58 and Ni-58?
2 electron and 2 protons
The symbols for elements with accepted names
consist of either a single capital letter or a capital letter and a small letter.
What is the reason that U-238 is different from U-235?
three more neutrons
Atoms are neutral. How can they have no charge?
equal numbers of protons and electrons
If you have 25.6 g of O2, how many moles of oxygen molecules do you have?
0.800
Which of the following is located in the nucleus of an atom?
proton and neutron
How many moles of N2O contain the same number of nitrogen atoms as 4.60 g of NO2?
0.0500
What is the molecular weight of Na2CO3 ?
106
