Metals Answers

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Which metal in Period 5 is very reactive and has two valence electrons in each atom?

A
rubidium (Rb)
B
strontium (Sr)
C
zirconium (Zr)
D
silver (Ag)
2
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Which property of metals allows aluminum to be flattened into thin sheets of aluminum foil?

A
shininess
B
malleability
C
brittleness
D
hardness
3

Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, “What a great demonstration of the properties of metals!”What properties of metals would Mrs. Franklin most likely teach about with this demonstration?

A
conductivity and luster
B
ductility and malleability
C
malleability and reactivity
D
conductivity and ductility
4

Which element is most likely to bend without breaking?

A
carbon (C)
B
iodine (I)
C
silicon (Si)
D
cobalt (Co)
5

Which describes elements in the first group of the periodic table?

A
alkali metals
B
alkaline earth metals
C
transition metals
D
radioactive metals
6

Which statement correctly compares an atom of an alkali metal with an atom of the alkaline earth metal next to it on the periodic table?

A
The alkali metal atom forms a +1 ion, while the alkaline earth metal atom forms a +2 ion.
B
The alkali metal atom forms a +2 ion, while the alkaline earth metal atom forms a +1 ion.
C
The alkali metal atom has one less shell of electrons than the atom of the alkaline earth metal.
D
The alkali metal atom has one more shell of electrons than the atom of the alkaline earth metal.
7

Each year, the science club puts on a science show for the students in the elementary school. Luis is planning demonstrations to show properties of metals. For one property, he decides to use a ball of pizza dough and a rolling pin.Which property of metals is Luis most likely going to demonstrate using these materials

A
luster
B
opacity
C
conductivity
D
malleability
8

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?

A
calcium, chromium, potassium
B
chromium, calcium, potassium
C
potassium, calcium, chromium
D
potassium, chromium, calcium
9

Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high luster of metals in order to work?

A
mirrors
B
pots and pans
C
food wrap
D
circuit boards
10

Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. How does this help explain the difference in the reactivity of metals within a group?

A
The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the top are more reactive than those at the bottom.
B
The valence electrons of the larger atoms are farther from the nucleus and are harder to remove, so the metals near the bottom are more reactive than those at the top.
C
The valence electrons of the larger atoms are farther from the nucleus and are harder to remove, so the metals near the top are more reactive than those at the bottom.
D
The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top.

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