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Chemistry Daily 10’s

Chemistry Daily 10’s. Week 1. 1. Applied research is carried out in order to Solve a particular problem By accident To learn basic information in order to make money. Which of the following is an extensive property of matter? Melting point Boiling point Volume Density. An atom is

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Chemistry Daily 10’s

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  1. Chemistry Daily 10’s Week 1

  2. 1 • Applied research is carried out in order to • Solve a particular problem • By accident • To learn basic information • in order to make money

  3. Which of the following is an extensive property of matter? • Melting point • Boiling point • Volume • Density

  4. An atom is • The smallest unit of matter that maintains its chemical identity • The smallest unit of a compound • Always made of carbon • Smaller than an electron

  5. Biochemistry is the study of • Properties, changes, and relationships between energy and matter • The chemistry of living things • Crystals and minerals • Carbon-containing compounds

  6. Inorganic chemistry is the study of • Non-carbon related compounds • The chemistry of living things • Mathematical modeling • The identification of the composition of metals

  7. 1. Answers & standards • A – scsh7.c,e,f • C – sc1b • A – sc1b • A – scsh8f • B – scsh8f

  8. 2 • A measure of the quantity of matter is • Density • Weight • Volume • Mass

  9. Matter includes all of the following except • Air • Light • Smoke • Water vapor

  10. A student recorded the following while completing an experiment. Color of a substance: yellow, shiny powder Effect of magnet: attracted The student should classify the substance as a(n) • Element • Compound • Mixture • Plasma

  11. A chemical change occurs when • Dissolved minerals solidify to form a crystal • Ethanol is purified through distillation • Salt deposits form from evaporated seawater • A leaf changes color in the fall

  12. A physical change occurs when • Peach spoils • Silver bowl tarnishes • Bracelet turns your wrist green • Glue gun melts a glue stick

  13. 2 answers & standards 1. D – sc1b 2. B – sc1b 3. C – sc1b 4. D – sc2b 5. D – sc2b

  14. 3 • A state of matter in which a material has no definite shape but has a definite volume is the ______ state. • Gas • Liquid • Plasma • Solid

  15. Plasma is the fourth state of matter. In the plasma state • Atoms gain electrons • Atoms lose electrons • Atoms form molecules • Atomic nuclei break down

  16. What happens to the energy in a substance when it changes state? • It is destroyed • It is changed into matter • It changes form, but is neither destroyed nor increased. • The energy remains unchanged.

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

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

  19. 3 answers & standards 1. A – sc6a 2. B – sc6a 3. C – sc6bc 4. A – sc6bc 5. C – sc1b

  20. 4 1. A mixture is a. 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.

  21. 2. If a mixture is uniform in composition, it is said to be a. homogeneous. b. chemically bonded. c. heterogeneous. d. a compound.

  22. 3. A homogeneous mixture is also called a. chemically bonded. b. a compound c. a solution. d. a solute.

  23. 4. Which of the following is an example of a heterogeneous mixture? a. a gold ring b. seawater c. granite d. sucrose

  24. 5. Which of the following is an example of a homogeneous mixture? a. air b. orange juice c. raw milk d. marble

  25. 4 answers & standards • C – sc1b • A – sc1b • C – sc1b • C – sc1b • A – sc1b

  26. 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

  27. 2. The vertical columns on the periodic table are called a. periods. b. rows. c. groups. d. elements.

  28. 3. The horizontal rows on the periodic table are called a. actinides. b. families. c. elements. d. periods.

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

  30. 5. Metalloids are often a. unreactive. b. semiconductors. c. lanthanides. d. from outer space.

  31. 5 answers & standards • B – sc3c, sc4b • C - sc3a, sc4b • D - sc3a, sc4b • A - sc4b • B - sc4b

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