Chemistry
CH 1 Matter Worksheet
UNDERSTANDING VOCABULARY
In the space at the left, write the term that correctly completes each statement. Use each of the terms listed.
atoms homogeneous physical change
calorimeter interface physical properties
chemical change joule solution
chemical properties material solvent
compound mixture specific heat
element phase substance
extensive property
1. A device used to measure the energy changes taking place during a phys or chemical change is a(n)
___________________________
2. Any physically separate part of a material having a uniform set of properties is known as a(n)
___________________________
3. A(n) _____ is a homogeneous material with a variable composition. ___________________________
4. A(n) _____ is either a compound or an element. ___________________________
5. A(n) _____ has occurred if a new substance with new proper ties has been formed.
___________________________
6. A specific kind of matter like concrete, copper, and sugar is called a(n) ________________________
7. A surface where different phases are in contact is a(n) ___________________________
8. ___________________________depend upon the action of the substance in the presence of other
substances.
9. The dissolving material in a solution is called the ___________________________
10. The derived SI unit used to measure energy changes is the ___________________________
11. _____ materials consist of only one phase,
12. A substance composed of more than one kind of atom is a(n) ___________________________
13. Electrical conductivity, mass, and color of a material are examples of _________________________
14. When only the appearance of a material has been altered through a change of state or shape, a(n)
___________________________has taken place.
15. A(n) ___________________________ is a substance composed of only one kind of atom.
16. Very tiny particles making up all matter are called ___________________________
17. A(n) ___________________________ depends on the amount of matter present.
18. A material composed of two or more substances in a wide range of proportions is called a(n)
___________________________
19. The amount of heat needed to raise the temperature of one gram of a substance 1 C° is called
___________________________
In the space at the left, write the letter of the term or phrase that correctly answers each question or best completes each statement.
1. _____ is an example of a homogeneous material.
a. Wood b. Sugar c. Concrete d. Pizza
2. Ice and _____ are different phases of the same substance.
a. mercury b. steam c. alcohol d. dry ice
3. If a sample of a material contains three phases, the sample is _____
a. homogeneous c. a solution
b. heterogeneous d. homogeneous or heterogeneous
4. Substances may be either _____ or compounds.
a. elements c. solutions
b. mixtures d. heterogeneous materials
5. A solution is a(n) _.
a. compound b. element c. substance d. mixture
6. _____ is a compound.
a. Copper b. Oxygen c. Carbon dioxide d. Antifreeze
7. _____ is a material but not a substance.
a. Sulfur b. Air c. Sugar d. Carbon dioxide
8. A 4M solution contains ___ times as much solute as a 0.1M
a. 0.4 b. 4 c. 400 d. 40
9. Salt is dissolved in some water. The water is the _____
a. solution b. interface c. solute d. solvent
10. Ductility and malleability properties.
a. intensive b. chemical c. extensive d. electrical
11. _____ is an extensive property.
a. Conductivity b. Volume. c. Temperature d. Boiling point
12. Distillation is used to separate liquids with different _____
a. freezing points b. solubility’s c. boiling points d. densities
13. When a chemical change takes place, a new _____ is always formed.
a. substance b. element c. mixture d. solution
14. Fractional crystallization is used to separate substances in the same solution having different _____
a. freezing points b. solubility’s c. densities d. boiling points
15. Compounds can usually be broken down into their constituent elements by
a. physical change c. chemical change
b. distillation d. fractional crystallization
16. _____ is transferred because of a temperature difference between t objects.
a. Heat b. Sound c. Light d. Chemical energy
17. All of the following are physical properties of water EXCEPT _____
a. it has a density of 1 g/cm at 4°C c. it does not burn
b. it forms hexagonal crystals d. it melts at 0°C
18. The material in the following group is _____
a. syrup b. salt c. nickel d. all of these
19. To raise the temperature of one gram of water 1 C 4.18 joules of energy are needed. These
4.18 joules are the ____ of water.
a. specific gravity b. specific heat c. activation energy d. chemical energy
Classify each of the following materials as (1) a compound, (2) an element, (3) a heterogeneous mixture, or (4) a solution.
a. iron filings _______ f. table salt (sodium chloride) _______
b. gasoline _______ g. sugar in water _______
c. nitrogen _______ h. sand and powdered zinc _______
d. grain alcohol _______ i. homogenized milk _______
e. baking soda (sodium hydrogen carbonate) _______
Identify each of the following changes as (1) chemical or (2) physical,
a. grinding rock candy into a powder _______ e. cooling soda in the refrigerator _______
b. warming up left-over vegetable soup_______ f. dropping an Alka-Seltzer tablet into a
glass of water _______
c. rusting of a razor blade _______ g. tarnishing of a silver spoon _______
d. mixing Kool-Aid water and sugar together _______ h. mulching grass _______
Label the appropriate space using each of these terms: heterogeneous mixture, element, solution, compound. Homogeneous Heterogeneous
a. definite composition ______________ d. ______________
b. variable composition ______________
c one kind of atom ______________
Indicate the type of property each of the following statements is describing as (1) chemical,
(2) extensive physical, or (3) intensive physical.
_______ a. The boiling point of ethyl ether is 34.6°C.
_______ b. The volume of soda in the bottle is 1 dm3.
_______c. Copper is an excellent conductor of electricity.
_______d Sodium reacts vigorously with water.
_______ e. The density of silver is 10.50 g/cm3.
_______f. Oxygen is needed for objects to burn.
_______g. Gold is very malleable.
_______ h. The mass of a peanut is 6.1 g.
1. Differentiate between an element and a compound.
_________________________________________________________________________
2. Explain the difference between extensive arid intensive physical properties.
_________________________________________________________________________
3. Explain why two liquids in a solution may be separated by distillation.
_________________________________________________________________________
4. Give two examples of solutions that are not liquids.
_________________________________________________________________________
5. Explain two ways energy can be transferred between a system and its surroundings.
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________