Chemistry Unit Review

Front

Which element is in period 1 group 18?

Back

Helium is the element located in period 1, group 18 of the Periodic Table.

Front

What are elements that are shiny, conduct electricity and heat called?

Back

These elements are called metals.

Front

True or False: Each row/period on the Periodic Table represents the number of energy levels present in an atom of the element.

Back

True. Each period corresponds to the number of energy levels in the atoms of the elements in that row.

Front

How can the properties of an element be predicted?

Back

The properties of an element can be predicted from its location on the Periodic Table.

Front

In what section would Transition Metals be found on the Periodic Table?

Back

Transition Metals are found in the orange section of the Periodic Table.

Front

What is the Periodic Table?

Back

The Periodic Table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What are nonmetals?

Back

Nonmetals are elements that are typically poor conductors of heat and electricity and are not shiny.

Front

What is an atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, and they are found along the zig-zag line on the Periodic Table.

Front

What is the significance of group numbers in the Periodic Table?

Back

Group numbers indicate the number of valence electrons in the elements, which determines their chemical reactivity.