Unit 9 - Introduction to the Periodic Table

Front

What is a pure substance made of one kind of atom?

Back

element

Front

What is a combination of two or more elements called?

Back

compound

Front

What is the smallest particle of an element?

Back

atom

Front

____________________ are positively charged particles in the nucleus of an atom.

Back

proton

Front

____________________ are negatively charged particles found on the outside of an atom.

Back

electron

Front

____________________ are particles in the nucleus of an atom that have no electrical charge.

Back

neutron

Front

A row of elements is called a ____________________.

Back

period

Front

A column of elements is called a ____________________.

Back

group

Front

Which part of the element shown is the atomic mass? Options: 11, Na, Sodium, 23.0

Back

23.0

Front

Which part of the element shown is the atomic number? Options: 11, Na, Sodium, 23.0

Back

11