Atoms and Elements

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

The first energy shell can hold ______ electrons.

• 2

• 8

• 18

Elements in the same group have __________

• Similar Properties

• Same number of shells

• Similar Mass

Elements which are shiny, conduct electricity and heat are called

• metal

• nonmetal

• metalloid

• nonexistent

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• Element

• Compound

• Molecule

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• Element

• Compound

• Molecule

Tags

NGSS.MS-PS1-1

The smallest particle that makes up matter.

• Atoms

• Elements

• Molecules

• Compounds

Tags

NGSS.MS-PS1-1

What is krypton?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

Which is the best description of an element?

• A substance that cannot be broken down into simpler substances

• A collection of atoms that have different abilities when joined together

• A man-made mineral

• A mixture of substances

This picture represents which of the following?

• Element

• Compound

• Molecule

Tags

NGSS.MS-PS1-1