Periodic Table and Matter Test Review

________ are the basic building blocks of matter.

Tags

NGSS.MS-PS1-1

They are composed of subatomic particles: ____________, ____________, and ____________.

• protons, neutrons, nucleus

• protons, electrons, electron cloud

• protons, neutrons, electrons

Tags

NGSS.MS-PS1-1

___________ have a positive charge.

The ____________ contains protons and neutrons.

Protons determine the identity of an atom (__________ number).

Tags

NGSS.HS-PS1-7

Neutrons affect the mass of an atom (__________ number).

The number of protons equals the number of electrons in a ____________ atom.

• neutral
• charged
• negative
• positive

____________ are atoms of the same element with different numbers of neutrons.

• Ions

• Neutrals

• Isotones
• Isotopes

____________ created the first periodic table organizing elements by increasing atomic mass and similar properties.

• Aristotle

• Bohr

• Mendeleev

• Einstein

The modern periodic table is organized by increasing ____________ number and groups elements.

• molecular
• mass
• density
• atomic