24-25 Atoms, ECM Test

Front

What is the central region of an atom where its neutrons and protons are located?

Back

Nucleus

Front

Which of the following is an example of a compound found in everyday life? (Gold, Iron, Water, Oxygen gas)

Back

Water (H2O)

Front

What does the number 1 represent in atomic notation?

Back

Number of protons

Front

What are the positive particles of an atom called?

Back

Protons

Front

What characteristic is used to identify a heterogeneous mixture?

Back

Visible different components; not evenly mixed

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of a neutron?

Back

Neutral

Front

What is the charge of an electron?

Back

Negative

Front

What is a molecule?

Back

A group of atoms bonded together.

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.