Chem ALL TOPICS

Dihydrogen monoxide (H₂O), sodium chloride (NaCl) and Calcium carbonate (CaCl) are all examples of

• mixtures

• compounds

• elements

• water

What type of heat transfer is shown here?

• convection

• conduction

• radiation

• boiling water

Which state of matter (solid, liquid, or gas) are the atoms sliding over one another?

• Solid

• Liquid

• Gas

• Plasma

What type of mixture is this?

• heterogeneous 
• homogeneous

Cooking an egg is an example of ...

• a physical change

• a chemical change

• neither

• both

It shows the actual number of atoms of each element in a molecule.

• Molecular Formula

• Empirical Formula

• Chemical Formula

• Molar Formula

It is the standard scientific unit for measuring the amount of substance or large quantities of very small entities e.g. atoms, molecules, or other specified particles.

• Mole

• Molecule

• Atomic Mass

• Molar Mass

The molecular formula for a carbon and hydrogen compound is C₈H₁₈. What is the empirical formula?

• C₈H₁₈

• C₁₈H₈

• C₉H₄

• C₄H₉

How many grams is 3 moles of sulfur?

• 96g

• 32g

• 16g

• 8g

Ammonium nitrate (NH₄NO₃), commonly known as ANFO, is a compound used to make explosive devices. How many grams are in one mole of ammonium nitrate to the nearest thousandths place?

• 31.014 g

• 48.045 g

• 45.021 g

• 80.043 g