Matter Study Questions

1.    What is chemistry?

2.    What is matter?

3.    Define mass.

4.    What are the two aspects of structure?

5.    Contrast qualitative and quantitative.

6.    Compare mixtures and substances.

7.    What is a mixture?

8.    You have a mixture of salt and sand.  How can you separate them?

9.    You have a mixture of iron and sugar. How can you separate them?

10.              How does a solution differ from a suspension?

11.              Define solute.

12.              Define solvent.

13.              What is a phase?

14.              What phases are found in a cup of brewing tea?

15.              Describe a heterogeneous mixture.

16.              Compare elements and compounds.

17.              What are physical properties?

18.              What are chemical properties?

19.              Is density an intensive or extensive property?

20.              Is mass an intensive or extensive property?

21.              Is temperature an intensive or extensive property?

22.              Is volume an intensive or extensive property?

23.              Compare solids and glasses.

24.              Describe the molecular movement in solids, liquids, and gases.

25.              What are the signs a chemical reaction is occurring?

26.              When is a chemical property observed?

27.              What is a system?

28.              What type of energy changes happen in chemical systems?

29.              What are the three types of energy transfers found in chemistry?

30.              Compare exothermic and endothermic reactions.

31.              Describe the energy changes involved in getting energy from the sun to you vocal cords.

32.              The element oxygen is a gas that makes us 20% of Earth’s atmosphere.  It is also the most abundant element in Earth’s crust, yet Earth’s crust is not a gas.  Explain this apparent conflict.

33.              On cool evenings a campfire warms the body and spirit.  Is the burning of logs an exothermic or endothermic reaction?

34.              What is the solvent in an aqueous solution of NaCl?

35.              What is energy, and why is it important in chemistry?

36.              How does a qualitative observation differ from a quantitative observation?

37.              Is the processing of French fries in your body an exothermic or endothermic process?

38.              Which of the following has the lowest boiling point: oxygen, water, and salt?

39.              Which of these compounds have the highest melting point: oxygen, water, and salt?

40.              What does the formula C₂H₆O tell you about the substance it represents?  Be as specific as possible.