Unit 2: Matter and its Changes (Honors) Final Review

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

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

Which option shows only elements?

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

Which type of substance cannot be broken down into simpler substances?

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-5

Which of the following is NOT considered a pure substance?

• Element
• Compound
• Mixture

Which of the following best describes a compound?

• A pure substance made up of one type of atom.
• A pure substance made up of two or more atoms chemically combined.
• A substance made up of two or more pure substances physically combined. 
• A substance made up of three atoms.

Which of the following lists only elements?

• H₂O + OH, MgCl₂
• H₂O, KF, Ne
• KCl, Ag, Au
• K, Cl, N