Honors Chemistry Final Exam Review

How many neutrons are there in one atom of ₈₀²⁰⁴Hg ?

• 124

• 80

• 204

• 284

• none of these

Tags

NGSS.MS-PS1-1

Using the periodic table, which element would you predict has properties most similar to that of sodium?

• boron

• calcium

• sulfur

• nitrogen

Tags

NGSS.HS-PS1-1

On another planet, the isotopes of titanium have the following natural abundances. What is the average atomic mass of titanium on that planet?

• 243.85 amu

• 46.51 amu

• 143.85 amu

• 47.95 amu

Tags

NGSS.HS-PS1-7

Because c, the speed of electromagnetic radiation, is a constant, the wavelength of the radiation is

• directly proportional to its frequency

• equal to its frequency

• inversely proportional to its frequency

• double its frequency

Tags

NGSS.HS-PS4-1

For an electron in an atom to change from the ground state to an excited state, it must

• emit energy and jump to a higher energy level

• emit energy and fall to a lower energy level

• absorb energy and jump to a higher energy level

• absorb energy and fall to a lower energy level

The elements fluorine, chlorine, bromine, iodine, and astatine can all be found in group 17 of the periodic table. These elements are known as the

• alkali metals

• metalloids

• halogens

• noble gases

When chemical compounds form, valence electrons are those that may be

• lost only

• gained only

• shared only

• lost, gained, or shared

Group 18 elements are known as the noble gases. These elements have ___ valence electrons, making them ______ .

• 8; stable

• 8; unstable

• 18; stable

• 18; unstable

Tags

NGSS.HS-PS1-1

Which of the following exhibits the correct orders for increasing both atomic radius and ionization energy, respectively?

• S, O, F

  and

  F, O, S

• F, S, O

  and

  O, S, F

• S, F, O

  and

  S, F, O

• F, O, S

  and

  S, O, F

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element has the electron configuration [Kr] 5s²4d¹⁰5p³ ?

• Sb

• Nb

• As

• none of these

Tags

NGSS.HS-PS1-1