Tutorial 2/1 (7th Grade) - Science

Front

What is a particle that carries a negative electrical charge?

Back

Electron

Front

What are substances that have the same number of protons in each atom but varying neutron numbers?

Back

Isotopes

Front

What contains a dense central nucleus surrounded by a cloud of negatively charged electrons?

Back

Atom

Front

What is a substance that cannot be broken into two or more simpler substances?

Back

Element

Front

What does the Greek word 'atomos' mean?

Back

Uncuttable or something that cannot be divided

Front

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

Back

Atom

Front

What are positively charged particles found in the nucleus of an atom?

Back

Protons

Front

What are neutral particles found in the nucleus of an atom?

Back

Neutrons

Front

What is the term for a charged atom or molecule?

Back

Ion

Front

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

Back

Atomic number