1. Atoms of elements that are in the same
group have the same number of
5. Mendeleev left gaps in his periodic table
because
A. Protons
A. the table was too full
B. Valence Electrons
B. no known elements fit there.
2. Which of the following elements is an
alkali metal?
6. Each column of the periodic table is
A. Sodium
A. a group
B. Calcium
B. a period
3. Semiconductors are elements that
7. The periodic law states that elements that
have similar properties appear
A. do not form compounds.
A. at every tenth element
B. can conduct heat and electricity under
certain conditions.
B. at regular intervals.
4. Carbon and other nonmetals are found in
which area of the periodic table?
8. Elements that belong to the same group
have the same number of
A. On the right side
A. neutral electrons
B. On the left side
B. valence electrons.
9. Atoms that gain or lose electrons are called
13. Most elements on the left side of the
periodic table are
A. isotopes
A. nonmetals
B. ions
B. metals
10. Elements that have one valence electron
tend to
14. Each element in an element family shares
the same
A. be highly reactive
A. number of valence electrons
B. not react
B. atomic number
11. The three main groups of elements are
metals, nonmetals, and
15. Elements in an element family have
similar
A. alkali metals
A. atomic weights
B. semiconductors
B. chemical properties
12. Most elements are
16. How do you know that potassium, an
alkali metal, is highly reactive?
A. metals
A. It has one valence electron
B. nonmetals
B. It conducts heat
17. Which of the following is not true of
noble gases?
21. Metals tend to be
A. They exist as single atoms.
A. gases
B. They are highly reactive.
B. good conductors of heat.
18. Elements within the same group in the
periodic table have similar properties because
they have the same number of
22. Which is not a family of the periodic
table?
A. valence electrons
A. anions
B. protons
B. noble gases
19. Elements that share properties of both
metals and nonmetals are called
23. Alkali metals are extremely reactive
because they
A. ions
A. have very small atomic masses.
B. semiconductors.
B. have one valence electron
20. Which statement about the alkali metals
is correct?
24. Most halogens form compounds by
A. They are located in the left-most column
of the periodic table.
A. gaining an electron to form a negative ion
B. They are usually gases.
B. losing protons
25. A compound differs from a mixture
because it
29. In which type of bond do atoms share
electrons?
A. ionic bonds
A. always remains frozen
B. covalent bonds
B. is held together by chemical bonds.
26. Often atoms join so that each atom will
have
30. A carbon atom can bond to four other
atoms because it has
A. an outer most energy level that is full of
electrons.
A. four valence electrons
B. no protons in its nucleus.
B. an equal number of protons and
electrons.
27. The bonds that hold atoms together
behave most like
A. glue
B. flexible springs.
28. An ionic bond is a bond that forms
between
31. Atoms and ions are held together by
A. nuclear bonds
B. chemical bonds.
32. Which of the following models could be
used to compare the sizes of atoms in a
molecule?
A. ions with opposite charges
A. space filling
B. atoms with neutral charges.
B. ball-and-stick
33. Which of the following models would
show the bond angle?
37. The forces that hold different atoms or
ions together are
A. Space filling
A. electric currents
B. Ball-and-Stick
B. chemical bonds
34. Atoms sometimes form bonds to
38. The order of elements in the periodic
table is based on the number of
____________________ in the nucleus.
A. become more stable
A. Protons
B. lose energy
B. electrons
35. A compound is held together by
A. gravity
39. Neon is an inert gas because its outer
_________________________ is full of
electrons.
B. chemical bonds
A. nucleus
B. energy level
36. Atoms often join so that each atom will
have
40. Group 17 halogens form compounds by
gaining an electron to become
_________________________.
A. and outermost energy level that is full of
electrons.
A. negative ions
B. an equal number of protons and
electrons.
B. positive ions
41. One of the important ideas about
Mendeleev’s periodic table was that he
predicted new ____________________.
45. Elements that are usually shiny are
____________________.
A. nonmetals
A. compounds
B. elements
42. The periodic law states that, in the
modern periodic table, elements with similar
____________________ appear at regular
intervals.
a. chemical properties
B. masses
43. A group’s elements react similarly
because of their
_________________________.
A. nucleus
B. valence electrons
44. Some elements are highly
____________________ because their
outermost energy levels are only partially
filled.
B. metals
46. Elements that have properties of both
metals and nonmetals
A. Semiconductors
B. earth metals
47. Highly reactive elements of Group 17
that are poor conductors
A. alkali metals
B. Halogens
48. highly reactive elements that belong to
Group 1
A. Alkali metals
A. reactive
B. Alkali earth metals
B. nonreactive
49. elements that belong to Groups 3-12 and
are somewhat reactive
50. Group 2 elements that have two valence
electrons
A. halogens
A. alkali earth metals
B. transition metals
B. Alkali metals