Physical Science Midterm Test

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Does a physical change change the chemical properties of a substance?

Back

False

Front

What is the very center/core of the atom?

Back

The nucleus.

Front

What does the Bohr model represent?

Back

The Bohr model represents the arrangement of electrons in an atom.

Tags

NGSS.HS-PS1-1

Front

Which element does the Bohr model below represent?

Back

Magnesium.

Tags

NGSS.HS-PS1-1

Front

What is the maximum number of electrons that can be held in the outer energy level of most atoms?

Back

8.

Front

What do elements in the same column of the periodic table have in common?

Back

They have similar properties.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2