Understanding Molecules, Compounds, Elements, and Atoms

What is an Atom?

• What matter is made of, too small to be seen

• molecules that like to float around

• Water (H20) Molecule

• Two or more elements put together

Answer explanation

Atoms are the smallest unit of matter. 

They are too small to see. 

All matter is made up of atoms: anything you can see, touch, smell

Example: a single piece of gold is made up of many gold atoms. 

Idea: One red lego brick

Tags

NGSS.MS-PS1-1

What is the negative charge part of the atom? (-)

• Neutron

• Proton

• Electron

• Compound

What is the positively charged part of an atom? (+)

• Neutron

• Protron

• Electron

• Matter

What two things make the Nucleus (Center) of an Atom?

• Proton

• Neutron

• Electron

• Megatron

Answer explanation

Neutrons and Protons make up the Nucleus of an atom. They are the Neutral (No Charge) and Positive (Protons) parts of an atom.

The Electrons are on the orbitals of the atom and they circle around and around.

Tags

NGSS.MS-PS1-1

Which part of the atom is neutral and has no charge?

• Electron

• Proton

• Neutron

• Ion

What is the central part of an atom called?

• Electron cloud

• Nucleus

• Proton

• Neutron

Which of the following is a mixture? (Hint: There may be more than one correct answer)

• 
• 
• 
• 

Answer explanation

Remember that in a mixture you are able to separate all the pieces like taking the tomatoes out of a salad.

A compound is chemically bonded. Like when you mix together the ingredients of cake batter.

An Element is __________________

• A PURE substance that is made up of only one type of atom.

• Molecule that is made up of two or more different atoms bonded together.

• Electron

• Table Salt

  (NaCl)

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• DNA and RN

Tags

NGSS.MS-PS1-1

Combinations of two or more substances that are not chemically bonded are called ___________________.

• Mixtures

• Compounds

• Molecules

• Element

• Atom

Answer explanation

Mixtures: 

Combinations of two or more substances that are not chemically bonded. 

Think about Salads or a bowl of random legos that are not connected.