Intro to biochemistry and water review

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

2 or more different elements that are bonded together is called...

• A. element

• B. compound

• C. mixture

• D. solution

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Which of the following lists only elements?

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

Which of the following is an example of a heterogenous mixture?

• soap
• a salad with lettuce, olives, and tomatoes
• cup of coffee
• water

This type of mixture looks the same throughout. 

• Homogenous
• Heterogeneous

• element
• compound
• mixture of elements and compounds
• mixture of compounds

A water strider can skate along the top of a pond because:

• covalent bonds result in water cohesion
• hydrogen bonds result in water cohesion (surface tension)
• water striders have adapted to take advantage of water cohesion
• low surface tension of water

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon