Element/Compound/Mixtures/Atoms/Periodic Table

Multiple Choice

Identify the choice that best completes the statement or answers the question.

1.A pure substance is

  1. solution
  2. single compound that has definite chemical properties
  3. a pure substance that can not be broken down.
  4. a combination of two substances that are not chemically combined

2.What is not a physical characteristic used to identify an element?

  1. Melting point
  2. Boiling point
  3. Density
  4. Mass

3.A mixture is

  1. made of two or more elements joined together by a chemical force
  2. a solution that can only be separated by chemical means.
  3. a combination of two or more substances not chemically combined
  4. a solution is a compound consisting of two or more elements.

4.Find Titanium on the periodic table in your agenda. How many protons does Titanim have

  1. 22
  2. 47.87
  3. 26
  4. 48

5.How many electrons does Titanium have

  1. 22
  2. 47.87
  3. 26
  4. 48

6.How many neutrons does Titanium have?

  1. 22
  2. 47.87
  3. 26
  4. 48

7.Compounds are broken down by

  1. chemical means
  2. physical means
  3. filtering
  4. sifting the compound through a strainer

8.A compound is

  1. A substance made up of two or more atoms joined by a chemical reaction.
  2. Two substances not chemically combined.
  3. A substance that cannot be separated even by a chemical reaction.
  4. Two substances that can be joined together by physical means.

9.A molecule is

  1. the smallest particle of an atom
  2. a group of atoms held together by chemical means
  3. a subatomic particle with a negative charge.
  4. has not charge and lives in the nucleus.

10.Periodic Law states

  1. elements have repeating chemical and physical properties that change
  2. the symbol of the elements determines their place in the periodic table.
  3. an isotope is unstable if you add protons
  4. elements are arranged alphabetically on the periodic table.

11.A proton is

  1. subatomic particle negative in charge located in the nucleus
  2. subatomic particle neural in charge located in the nucleus
  3. subatomic particle positive in charge located in the nucleus
  4. Found hovering outside the nucleus in a proton cloud.

12.A group or family on the periodic table

  1. is the horizontal rows and determine a repeating pattern.
  2. The vertical columns on the periodic table that determines a repeating pattern.
  3. vertical column on the periodic table where the elements share chemical properties.
  4. The horizontal rows which determines the physical and chemical characteristic

13.Where are metals found on the periodic table?

  1. To the right of the zigzag line
  2. Bordering the zigzag line
  3. To the left of the zigzag line.
  4. On the bottom two lines of the periodic table

14.Where are metalloids found on the periodic table?

  1. to the right of the zigzag line.
  2. bordering the zigzag line.
  3. to the left of the zigzag line.
  4. Below- the bottom two periods

15.Where are nonmetals found on the periodic table.

  1. To the right of the zigzag line
  2. Bordering the zigzag line
  3. Only on the bottom two periods
  4. To the left of the zigzag line.

16.An electron is

  1. a subatomic particle of an atom with a neutral charge.
  2. a subatomic particle of an atom with a negative charge
  3. a subatomic particle of an atom with a neutral charge.
  4. Hovers inside the nucleus of an atom.

____17.What is an isotope?

  1. A atom that has the same number of neutrons as other atoms of the same element but different number of protons.
  2. A atom that has the same number of electrons as other atoms of the same element but different number of protons.
  3. A atom that has the same number of protons as other atoms of the same element but different number of neutrons.
  4. An electron shell where atoms jump from level to level.

18.What is a neutron?

  1. A subatomic particle of an atom that has a negative charge located outside the nucleus.
  2. A subatomic particle of an atom that has a positive charge located inside the nucleus
  3. A subatomic particle of an atom that has a no charge located outside the nucleus.
  4. A subatomic particle of an atom that has a no charge located inside the nucleus.

19.What is the nucleus of an atom

  1. The atoms central region which is made up of protons and electrons.
  2. The atoms central region which is made up of neutrons and electrons.
  3. The atoms central region that is made up of isotopes and electrons.
  4. The atoms central region that is made up of neutrons and protons

20.Define the term electron cloud.

  1. The nucleus where electrons can be found.
  2. The region hovering around the nucleus where electrons are likely to be found.
  3. The region hovering around the nucleus where protons are likely to be found.
  4. The region hovering around the nucleus where neutrons are likely to be found.

21.The atomic mass unit (AMU) measures what?

  1. the unit of measurement that describes the mass of an atom or molecule.
  2. The American metric unit of measurement used to weigh atoms.
  3. Scale used to weigh metals on the periodic table, thus the name, Atomic Metal Unit of measurement.
  4. A universal way to weigh stuff.

22.Horizontal rows on the periodic table are called

  1. Groups
  2. Families
  3. Periods
  4. intervals.

23.Periods increase in atomic number from

  1. top to bottom
  2. diagonally
  3. left to right
  4. chemical reactions

24.What is not considered a mixture?

  1. Solution
  2. Suspension
  3. Colloid
  4. Molecule

25.When you dissolve salt into water the salt is the

  1. Solvent
  2. Solute
  3. Solution
  4. solubility

26.In salt water which compound is the solvent?

  1. Water
  2. Salt
  3. Oxygen
  4. hydrogen

27.A solution

  1. is a compound
  2. A homogenous mixture of two or more substances uniformly dispersed throughout a single phase.
  3. Pure substance
  4. Polymers combined

28.Bohr said what about electrons in an atom?

  1. they live inside the nucleus
  2. Move around the nucleus in certain paths
  3. Exist in an electron cloud
  4. The path of electrons cannot be predicted

29.What does the term solubility mean?

  1. How dense something is
  2. The ability of the solute to dissolve in another substance at a given temperature and pressure
  3. How easy it is to crush an object to dissolve it
  4. The amount of particular substance in a given substance at a given temperature and substance

30.Concentration means

  1. How well two substances mix with each other
  2. The amount of a particular substance in a given mixture
  3. The extent to which a compound chemically combines
  4. The ability of one substance to dissolve in another

31.What did Schrodinger and Heisenberg, the fathers of the modern atomic theory say about electrons?

  1. They exist in electron shells
  2. The path of electrons can be predicted
  3. They exist in electron clouds and their paths cannot be predicted
  4. They exist in energy levels that hover around the nucleus

32.What is not a way to make a solid substance dissolve faster?

  1. Stirring the substance
  2. Crushing the substance
  3. Heating the substance
  4. Lowering the temperature of the solvent

33.What happens to the solubility of gasses when the temperature increases?

  1. Solubility decreases
  2. Solubility increases
  3. Solubility remains the same
  4. Gas dissolves in gas

34.What compounds are not found in nature?

  1. Carbohydrates
  2. Protein
  3. Carbon dioxide
  4. ammonia

35.What does the term periodic not mean?

  1. Repeating pattern
  2. Predictable
  3. Unpredictable
  4. Likely

36.Where are metals found on the periodic table?

  1. To the right of the zigzag line
  2. On the border of the zigzag line
  3. To the left of the zigzag line
  4. Scattered throughout the periodic table

37.Which of the following is not true about metals?

  1. Bad conductors of electricity and heat
  2. Solid at room temperature
  3. Shiny
  4. Ductile

Answer Key:

  1. b (Question taken off because students were given a different definition)
  2. d
  3. c
  4. a
  5. a
  6. c
  7. a
  8. a
  9. b
  10. a
  11. c
  12. c
  13. c
  14. b
  15. a
  16. b
  17. c
  18. d
  19. d
  20. b
  21. a
  22. c
  23. c
  24. d
  25. b
  26. a
  27. b
  28. b Question taken off because students didn’t know Bohr well
  29. b
  30. b
  31. c
  32. d
  33. a
  34. Question taken off (all answers are found in nature)
  35. c
  36. c
  37. a