1.2 Atoms

What is the center of an atom containing protons and neutrons called?

• Electron

• Molecule

• Nucleus

• Compound

What is the smallest unit of an element that has the properties of that element?

• Molecule

• Atom

• Compound

• Electron

Which subatomic particle has a positive charge and is located in the nucleus of an atom?

• Electron

• Neutron

• Proton

• Molecule

Which subatomic particle has no electric charge and is located within the nucleus of the atom?

• Electron

• Neutron

• Proton

• Atom

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Molecule

What is formed when two or more atoms join together?

• Element

• Molecule

• Compound

• Proton

Tags

NGSS.MS-PS1-1

What is a pure substance that cannot be broken down into simpler substances by chemical reactions?

• Compound

• Molecule

• Element

• Atom

What is formed when two or more different elements combine and can usually be separated into component elements by chemical reaction?

• Molecule

• Element

• Compound

• Proton

Tags

NGSS.MS-PS1-5