AnswersTX-Integrated Physics and Chemistry A-CRUnit Test

Nonmetals Answers

0 verified answers1 views
1
Free Preview

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

A
alkali metals
B
alkaline earth metals
C
transition metals
D
radioactive metals
2
Free Preview

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.
3

Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chemical reactivity of two metals?

A
Rubidium (Rb) is more reactive than strontium (Sr) because strontium atoms must lose more electrons.
B
Sodium (Na) is more reactive than magnesium (Mg) because sodium atoms must gain more electrons.
C
Calcium (Ca) is less reactive than potassium (K) because potassium atoms must lose more electrons.
D
Beryllium (Be) is less reactive than lithium (Li) because beryllium atoms must gain more electrons.
4

Metals are used in many products because of the characteristic properties that most metals share. Which properties of the metal tungsten make it useful in the thin, glowing filaments of light bulbs?

A
Tungsten is electrically conductive, ductile, and opaque.
B
Tungsten is ductile, is malleable, and has a high luster.
C
Tungsten is ductile, has a high melting point, and is electrically conductive.
D
Tungsten has a high luster, has a high melting point, and is silver in color.
5

Based on its location on the periodic table, which metal is likely to be less reactive than rubidium and more reactive than calcium?

A
potassium (K)
B
cesium (Cs)
C
magnesium (Mg)
D
titanium (Ti)
6

Which element is most likely to bend without breaking?

A
carbon (C)
B
iodine (I)
C
silicon (Si)
D
cobalt (Co)
7

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
8

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
9

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.
10

Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chemical reactivity of two different metals?

A
Barium (Ba) is less reactive than calcium (Ca) because the valence electrons in calcium atoms are farther from the nuclei and harder to remove.
B
Strontium (Sr) is more reactive than magnesium (Mg) because the valence electrons in strontium atoms are farther from the nuclei and harder to remove.
C
Rubidium (Rb) is more reactive than sodium (Na) because the valence electrons in sodium atoms are closer to the nuclei and easier to remove.
D
Lithium (Li) is less reactive than potassium (K) because the valence electrons in lithium atoms are closer to the nuclei and harder to remove.

Did you find these answers helpful?

More from this Course

Assignment
3 verified answers

Warm-Up