Nature of Science 2023

What is the smallest unit of matter?

• molecule

• cell

• element

• atom

Which subatomic particle has a positive charge?

• photon

• neutron

• electron

• proton

Which subatomic particle has a negative charge?

• positron

• electron

• proton

• neutron

Which subatomic particle has no charge?

• positron

• electron

• neutron

• proton

What is the center of an atom called?

• proton

• electron cloud

• nucleus

• neutron

Which of the following is NOT a property of matter?

• Temperature

• Volume

• Mass

• Energy

What is the state of matter with definite shape and volume?

• liquid

• gas

• plasma

• solid

What is the state of matter with definite volume but no definite shape?

• gas

• solid

• plasma

• liquid

What is the state of matter with no definite shape or volume?

• liquid

• solid

• plasma

• gas

What is a hypothesis?

• A statement that cannot be proven or disproven.

• A proposed explanation or prediction that can be tested through experimentation or observation.

• A random guess without any evidence or reasoning.

• A conclusion based on limited data or personal opinion.