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You can create printable tests and worksheets from these Grade 10 Molecules and Compounds questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

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Which is the correct formula for aluminum oxide?
1. $Al_2O$
2. $AlO_3$
3. $Al_3O_2$
4. $Al_2O_3$
The mass of one mole of a substance is called                  .
1. molecular mass
2. molar mass
3. total mass
4. none of the above
What is the correct name for the compound $MgO$?
1. magnesium trioxide
2. dimagnesium trioxide
3. magnesium oxide
4. magnesium oxygen
Water acts as a solvent of ionic compounds because                                                    .
1. water molecules are polar
2. water takes the shape of its container
3. water is found in three states of matter
4. water is a liquid over a wide range of temperatures

This question is a part of a group with common instructions. View group »

As a scuba diving air tank is filled with air, the air is compressed in the tank to as much as 3000 psi of pressure. When filling the tank, it is observed that the tank becomes warmer. Which argument BEST explains why this occurs?
1. When air is put into the tank, it expands rapidly, thereby raising the temperature.
2. When air is compressed, it turns solid. A short time later, the air evaporates back into a gas which releases heat.
3. Air molecules are free to move and as more air is added to the tank, the molecules move and collide faster which raises the temperature.
4. When air is compressed, the molecules line up into a crystalline structure. As the molecules line up, they release energy in the form of heat.
What is the formula for carbon tetrafluoride?
1. $C_4F_4$
2. $CF_4$
3. $CF$
4. $C_4F$
What is the correct name for the following compound: $SO_3$?
1. monosulfur oxide
2. monosulfur trioxide
3. sulfur trioxide
4. sulfoxide
Water is a polar molecule. This means that
1. the opposite ends of the molecule have opposite electrical charges.
2. water molecules are linear, like a pole.
3. water is one of the many hydrophobic molecules.
4. the atoms in water have equal electronegativities.
What is the correct name for the formula $PbS$?
What is the IUPAC name of $CuCl_2$?
1. copper (I) chloride
2. copper (II) chloride
3. copper (III) dichloride
4. copper dichloride

This question is a part of a group with common instructions. View group »

Which of the following compound does not contain a polyatomic ion?
1. sodium carbonate
2. sodium sulfate
3. sodium sulfite
4. sodium sulfide
Which of the following is the formula for magnesium hydroxide?
1. $MgOH$
2. $Mg(OH)_2$
3. $MgO$
4. $MgH_2O$
According to VSEPR theory, the molecular geometry for $"CH"_"3"^{+}$ is
1. tetrahedral.
2. trigonal pyramidal.
3. bent or angular.
4. none of the above.
What is the chemical formula for dinitrogen heptafluoride?
1. $N_7F_2$
2. $N_2F_7$
3. $NF_12$
4. $N_2F_9$