Chem 1 Unit 3 Test

Front

What type of element is sulfur?

Back

Sulfur is a nonmetal.

Front

Which element has the larger atomic radius: Carbon (C), Silver (Ag), or Mercury (Hg)?

Back

Mercury (Hg) has the largest atomic radius.

Front

True or False: Atoms are mostly empty space.

Back

True.

Front

Which element has the highest electronegativity: Sodium (Na) or Titanium (Ti)?

Back

Sodium (Na) has the highest electronegativity.

Front

Which element is in the same period as Arsenic (As): Magnesium (Mg), Carbon (C), or Calcium (Ca)?

Back

Calcium (Ca) is in the same period as Arsenic.

Front

Define atomic radius.

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Explain why atoms are mostly empty space.

Back

Atoms consist of a small nucleus surrounded by a cloud of electrons, which occupy a large volume compared to the nucleus.

Front

What is the significance of nonmetals in the periodic table?

Back

Nonmetals are essential for life and are involved in various chemical reactions.

Front

How does atomic radius change across a period?

Back

Atomic radius decreases from left to right across a period due to increased nuclear charge.