Assessment: Matter and Its Interactions

Front

What is the smallest particle that is the building block of matter?

Back

An atom.

Front

Define a substance in terms of matter.

Back

A substance is matter with a composition that is always the same.

Front

Which particle in an atom has a positive charge?

Back

Proton.

Front

What are the three main parts of an atom?

Back

Protons, neutrons, and electrons.

Front

What charge does an electron have?

Back

An electron has a negative electrical charge.

Front

What is matter?

Back

Anything that has mass and takes up space.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is the charge of a neutron?

Back

A neutron has no electrical charge (neutral).

Front

How do atoms combine to form molecules?

Back

Atoms combine by sharing or transferring electrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.