Matter and Energy

What is the definition of an atom?

• A type of molecule.

• The smallest particle in the universe.

• A unit of energy.

• The basic unit of matter

What is the name of the central part of an atom?

• nucleus

• proton

• electron

• neutron

Tags

NGSS.MS-PS1-1

What are the positively charged particles in an atom called?

• protons

• photons

• electrons

• neutrons

Tags

NGSS.MS-PS1-1

What are the particles in an atom that have no charge called?

• neutrons

• positrons

• electrons

• protons

What are the negatively charged particles in an atom called?

• neutrons

• positrons

• protons

• electrons

Tags

NGSS.MS-PS1-1

What is the term for a process in which substances are transformed into different substances?

• chemical reaction

• nuclear reaction

• biological reaction

• physical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the abbreviation used to represent an element in chemistry?

• atomic symbol

• chemistry abbreviation

• chemical symbol

• element code

What is a substance made up of two or more elements called?

• mixture

• element

• solution

• compound

What is a pure substance that cannot be broken down into simpler substances called?

• compound

• mixture

• atom

• element

What is the principle that states energy cannot be created or destroyed, only transformed or transferred?

• Law of Energy Transformation

• Energy Conservation Principle

• Energy Transfer Law

• Law of Conservation of Energy

Tags

NGSS.MS-PS3-5