Element, Compound, Mixture Review

Does the following chemical formula represent an element, compound, or mixture: Na + Cl?

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-1

Which type(s) of substances are considered pure substances?

• Elements only
• Compounds only
• Mixtures only
• Elements and compounds

This type of substance is made up of one type of atom. 

• Element
• Compound
• Mixture

Which of the following requires a physical change to separate?

• Element
• Compound
• Mixture

This is the smallest substance that can make up a substance while keeping its identity. 

• Atom
• Molecule
• Element
• Compound

Tags

NGSS.MS-PS1-1

What type of substance is being represented: O₂?

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-1

Max combines water and hydrogen to form water. What type of substance was formed?

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

This type of substance is formed through a chemical change. 

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which option shows only elements?

• NaCl, MgO, OH
• O, He, H, 
• OH, He, Al
• O+H, He+Al

Tags

NGSS.MS-PS1-1

Which type of substance makes up the majority of the atmosphere?

• Oxygen
• Nitrogen
• Water vapor
• Argon