8th Grade Physical Science Review FL

Front

Which particle carries a negative charge?

Back

Electrons are the particles that carry a negative charge.

Front

__________ are the building blocks of life.

Back

Atoms are the fundamental building blocks of all matter, including living organisms.

Front

Which of the following is an example of physical change? (Options: an ice cream melts due to heat, food digestion in stomach, rusting of iron due to water exposure, dynamite ignition)

Back

An ice cream melting due to heat is an example of a physical change.

Tags

NGSS.MS-PS1-4

Front

What is the formula to solve for the neutron? (Options: Mass + Atomic Number= Neutrons, Mass x Atomic Number = Neutrons, Mass - Atomic Number = Neutrons, Mass + Number of Protons = Neutron)

Back

The formula to find the number of neutrons is Mass - Atomic Number = Neutrons.

Front

Which of the following is NOT true about water? (Options: Water is considered a compound, Water is a pure substance, Water is an element, Water is not an element)

Back

Water is an element is NOT true; water is a compound made of hydrogen and oxygen.

Tags

NGSS.MS-PS1-1

Front

What is the definition of an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Tags

NGSS.MS-PS1-1

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

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 atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.