Chemistry Final Quiz

All elements in Group 1A have the same number of _______.

• valence electrons

• neutrons

• Protons

Answer explanation

All elements in Group 1A have the same number of valence electrons, which is the correct choice among the options provided.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Mendeleev arranged the elements in the first Periodic Table by _______.

• increasing atomic mass

• increasing atomic number

• metals, nonmetals, and metalloids

• Radioactivity

Answer explanation

Mendeleev arranged the elements in the first Periodic Table by increasing atomic number, not atomic mass, metals, nonmetals, or radioactivity.

An element's atomic number is equal to its number of _______.

• nucleus

• neutrons

• electrons

• protons

Answer explanation

An element's atomic number is equal to its number of protons, as the atomic number represents the number of protons in the nucleus of an atom.

All elements in the same Period have electrons located in the same _______.

• Group

• energy sublevel

• energy level

• number of isotopes

Answer explanation

All elements in the same Period have electrons located in the same energy sublevel.

Tags

NGSS.HS-PS1-2

What do elements within the same Group (or Family) of the Periodic Table have in common?

• number of energy levels

• state of matter

• number of isotopes

• similar physical and chemical properties

Answer explanation

Elements within the same Group (or Family) of the Periodic Table have similar physical and chemical properties.

An element in Group 2 of the Periodic table would be called a(n) ______.

• transition metal

• metalloid

• alkaline earth metal

• alkali metal

Answer explanation

An element in Group 2 of the Periodic table is called an alkaline earth metal, making it the correct choice among the options provided.

The reactivity of a given element is most closely related to its ______.

• density

• electron configuration

• melting point

• Solubility

Answer explanation

The reactivity of a given element is most closely related to its electron configuration.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify ONE correct physical property of nonmetals.

• low melting point

• conduct electricity

• conduct heat

• all of the above

Answer explanation

The correct physical property of nonmetals is a low melting point, making them generally poor conductors of heat and electricity.

Which name is not a correct name for any Group on the Periodic Table of Elements?

• Noble Gases

• alkali metals

• carbonates

• halogens

Answer explanation

The correct choice is 'carbonates' because it is not a correct name for any Group on the Periodic Table of Elements.

There is/are ____ valence electron(s) present for all alkali metals.

• 1

• 2

• 3

• 4

Answer explanation

All alkali metals have 1 valence electron, making the correct choice 1.

Tags

NGSS.HS-PS1-1