Atomic Mass & Number, Molecules & Compounds

This is any combination of two or more atoms from different elements that are chemically combined.

• compound

• molecule

• element

• pure substance

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NGSS.MS-PS1-1

These are what form chemical bonds as atoms share or take them from one another. They orbit the nucleus and have a negative charge (but they are still happy about things in general).

• electrons

• electron clouds

• protons

• neutrons

On the Periodic Table of Elements, this is the number below the chemical symbol and tells you how much mass is in a certain number of atoms for that element (you'll need to use this a LOT in high school chemistry).

• atomic mass

• atomic number

• chemical symbol

• mass

In the periodic table, elements are arranged in increasing order of...

• Atomic weight

• Atomic number

• Number of neutrons

• Atomic mass

Carbon dioxide is a compound.

• True
• False

Tags

NGSS.MS-PS1-1

Which part of an atom has no charge?

• protons
• neutrons
• electrons
• atoms

What is the name of a single type of atom?

• cell
• proton
• element
• atom

What is the term for combining 2 or more atoms together?

• atoms
• elements
• molecules
• compounds

Tags

NGSS.MS-PS1-1

The fluorine atom has an atomic number of

• 19

• 9

Tags

NGSS.MS-PS1-1

What is the mass number and atomic number ?

• Mass number = 7, atomic number = 14

• Mass number = 14, atomic number = 7

Tags

NGSS.MS-PS1-1