Atoms, Molecules, Elements & Compounds

What is matter?

• anything that has mass and takes up space

• anything that has volume and is solid

• anything that you can see

Answer explanation

Matter is EVERYTHING

Atoms combine to make (a)   .

Answer explanation

When atoms "stick" together in a molecule we call it a BOND

Tags

NGSS.MS-PS1-1

Is this an atom or molecule?

• atom

• molecule

Answer explanation

Molecules are more than one atom stuck together. Each atom is an ELEMENT

Tags

NGSS.MS-PS1-1

Is this an atom or an element?

• atom

• element

Answer explanation

It's both!! Remember, an element is one or more of the SAME atom. This was one atom of the element OXYGEN.

Tags

NGSS.MS-PS1-1

What makes an atom/element different from other atoms/elements?

• the number of protons

• the number of neutrons

• the number of electrons

Answer explanation

Oxygen has 8 protons...it is the only atom/element with 8 protons.

Tags

NGSS.MS-PS1-1

Elements are made of all the (a)   type of atom.

Answer explanation

Elements are PURE substances. They are only made of one type of atom.

Tags

NGSS.MS-PS1-1

When a molecule is made of DIFFERENT types of atoms, it is called a _____________.

• element

• compound

Answer explanation

Molecules with more than one element (or type of atom) in them are called compounds. Think of a compound sentence, which is two DIFFERENT sentences joined together...

Tags

NGSS.MS-PS1-1

What makes these atoms/elements different from one another?

• the number of protons

• the number of electrons

• the number of neutrons

Answer explanation

Remember...the number of protons in an atom is what sets it apart from other atoms. Only oxygen atoms have 8 protons. Only hydrogen protons have 1 atom. Only carbon atoms have 6 protons, etc.

Tags

NGSS.MS-PS1-1

Oxygen is different than hydrogen because oxygen has (a)   protons and hydrogen has 1 proton.

Answer explanation

When two hydrogen atoms and one oxygen atom combine you get a molecule of water!

Tags

NGSS.MS-PS1-1

Is this a compound or element?

• compound

• element

Answer explanation

This is the compound Carbon Dioxide (what we breathe out). It is made of the elements Carbon and Oxygen.

Tags

NGSS.MS-PS1-1