Compounds and molecules

This is the smallest unit of an element. (A single element indicated by a symbol.) He, I, H, Au

• atom

• molecule

• compound

• nucleus

Tags

NGSS.MS-PS1-1

This is any combination of two or more atoms from different elements that are chemically combined. Two or more different atoms joined together in a chemical bond by their Valence electrons. like H20

• compound

• molecule

• element

• pure substance

Tags

NGSS.MS-PS1-1

Any combination of two or more atoms that are chemically combined is called this. (They don't have to be different atoms like H20.) Example is 02, H2, or H20

• molecule

• compound

• element

• pure substance

Tags

NGSS.MS-PS1-1

This is what holds atoms in a molecule and compound together. They can be ionic or Covalent. Atoms use their Valence electrons to do this.

• chemical bond

• chemical formula

• chemical symbol

• electron cloud

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3

These are what determine the "Identity" of every atom and make one element different from another. They have a positive charge (yes, I'm positive that it's a positive charge).

• protons

• electrons

• neutrons

• nucleus

These hang out in the nucleus and don't really affect the properties of the atom that much. They don't have any charge (so they can't use credit cards). They do have a mass of 1AMU like the proton and hold the nucleus together.

• neutrons

• protons

• electrons

• atomic numbers

These are what form chemical bonds as atoms share or take them from one another. They orbit the nucleus in the outer ring.

• Valence electrons

• electron clouds

• protons

• neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This is the central region of an atom and where protons and neutrons hang out (but the protons and neutrons still follow proper social distancing rules!).

• nucleus

• electron cloud

• The Periodic Table of Elements

• atomic number

Tags

NGSS.MS-PS1-1

This is anything that has mass and takes up space (meaning it has a volume).

• matter

• mass

• element

• energy

This tells you how many protons are in each atom of a specific element and how many electrons there are in each unreacted atom from that element.

• atomic number

• atomic mass

• chemical formula

• chemical symbol