Atoms and Molecules 2

Which term defines a substance that is formed by the combination of elements using fixed amounts?

• Compound

• Atom

• Element

• Molecule

Which term defines any substance that cannot be broekn down into a simpler substance?

• Molecule

• Element

• Compound

• Atom

When two or more elements combine to form a new substance it is called a compound. Which substance is an example of a compound?

• Helium

• Hydrogen

• Potassium

• Water

Elements are made of 

• many types of atoms 
• the periodic table
• one type of atom 
• molecules 

Tags

NGSS.MS-PS1-1

All matter is made of 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

What is the basic unit of matter and is the smallest particle of an element?

• Atoms
• Elements
• Compounds
• Molecules

Tags

NGSS.MS-PS1-1

How many atoms are there in a molecule?

• no atoms
• 1 or more atoms
• 2 to thousands of atoms
• exactly 18 atoms

Tags

NGSS.MS-PS1-1

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0
• 1
• 2
• 3

Tags

NGSS.MS-PS1-1

Which part of an atom is POSITIVELY charged?

• protons
• neutrons
• electrons
• atoms