Matter & Atoms Vocab

Front

What is the dense area in the center of an atom called?

Back

Nucleus

Front

What is a table of all known elements called?

Back

Periodic table

Front

What charge does an electron have?

Back

Negative

Front

What is it called when substances combine to form a new substance with different properties?

Back

Chemical change

Front

What is the charge of a neutron?

Back

Neutral

Front

What is the smallest unit of an element that retains its properties?

Back

Atom

Front

What are positively charged particles in an atom called?

Back

Protons

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic number

Front

What is the term for the average mass of an element's isotopes?

Back

Atomic mass

Front

What is the outermost region of an atom where electrons are found called?

Back

Electron cloud