Chemistry Daily 10’s

Week 1

1

1. Applied research is carried out in order to a. Solve a particular problemb. By accidentc. To learn basic informationd. in order to make money

2. Which of the following is an extensive property of matter?

a. Melting pointb. Boiling pointc. Volumed. Density

3. An atom isa. The smallest unit of matter that maintains its

chemical identityb. The smallest unit of a compoundc. Always made of carbond. Smaller than an electron

4. Biochemistry is the study ofa. Properties, changes, and relationships

between energy and matter b. The chemistry of living thingsc. Crystals and mineralsd. Carbon-containing compounds

5. Inorganic chemistry is the study ofa. Non-carbon related compounds b. The chemistry of living thingsc. Mathematical modelingd. The identification of the composition of

metals

1. Answers & standards

1. A – scsh7.c,e,f2. C – sc1b3. A – sc1b4. A – scsh8f5. B – scsh8f

2

1. A measure of the quantity of matter isa. Densityb. Weightc. Volumed. Mass

2. Matter includes all of the following excepta. Airb. Lightc. Smoked. Water vapor

3. A student recorded the following while completing an experiment.

Color of a substance: yellow, shiny powderEffect of magnet: attractedThe student should classify the substance as a(n)a. Elementb. Compoundc. Mixtured. Plasma

4. A chemical change occurs whena. Dissolved minerals solidify to form a crystalb. Ethanol is purified through distillationc. Salt deposits form from evaporated seawater d. A leaf changes color in the fall

5. A physical change occurs whena. Peach spoilsb. Silver bowl tarnishes c. Bracelet turns your wrist green d. Glue gun melts a glue stick

2 answers & standards

1. D – sc1b2. B – sc1b3. C – sc1b4. D – sc2b5. D – sc2b

3

1. A state of matter in which a material has no definite shape but has a definite volume is the ______ state.

a. Gasb. Liquidc. Plasmad. Solid

2. Plasma is the fourth state of matter. In the plasma state

a. Atoms gain electronsb. Atoms lose electronsc. Atoms form molecules d. Atomic nuclei break down

3. What happens to the energy in a substance when it changes state?

a. It is destroyedb. It is changed into matter c. It changes form, but is neither destroyed nor

increased.d. The energy remains unchanged.

4. Which part of the illustration below shows the particles in a heterogeneous mixture?

5. The only pure substance listed below isa. bread dough.b. vinegar (5% acetic acid).c. vitamin C (ascorbic acid).d. seawater.

3 answers & standards

1. A – sc6a2. B – sc6a3. C – sc6bc4. A – sc6bc5. C – sc1b

4

1. A mixture isa. a combination of pure substances bonded

chemically.b. any substance with a uniform composition.c. a blend of any two or more kinds of matter, as

long as each maintains its own unique properties.d. any group of elements that are chemically

bonded to one another.

2. If a mixture is uniform in composition, it is said to be

a. homogeneous.b. chemically bonded.c. heterogeneous.d. a compound.

3. A homogeneous mixture is also calleda. chemically bonded.b. a compoundc. a solution.d. a solute.

4. Which of the following is an example of a heterogeneous mixture?

a. a gold ringb. seawaterc. granited. sucrose

5. Which of the following is an example of a homogeneous mixture?

a. airb. orange juicec. raw milkd. marble

4 answers & standards

1. C – sc1b2. A – sc1b3. C – sc1b4. C – sc1b5. A – sc1b

5

1. All known chemical elements are organized into groups based on similar chemical properties in the

a. chemical chart.b. periodic chart.c. element table.d. None of the above

2. The vertical columns on the periodic table are called

a. periods.b. rows.c. groups.d. elements.

3. The horizontal rows on the periodic table are called

a. actinides.b. families.c. elements.d. periods.

4. A nonmetal is usuallya. brittle.b. malleable.c. a good conductor.d. used to make jewelry.

5. Metalloids are oftena. unreactive.b. semiconductors.c. lanthanides.d. from outer space.

5 answers & standards

1. B – sc3c, sc4b2. C - sc3a, sc4b3. D - sc3a, sc4b4. A - sc4b5. B - sc4b