Chemistry of Life

Water is polar because:

• The molecule has two poles, at which it is colder than the other regions of the molecule.

• The water molecule is neutral

• The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. 

• The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.

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NGSS.HS-ESS2-5

Water is often called the “universal solvent” because many substances can be dissolved in water. What property of water allows it to be such a universal solvent?

• Purity

• Polarity and cohesion

• High heat capacity

• Expansion upon freezing

Any compound that removes H+ ions to an aqueous solution and measures more than 7 on the pH scale:

• Base

• Solvent

• Acid

• Solute

Substance in a solution that dissolves the other substance and is present in the greater amount:

• Solute

• Acid

• Solution

• Solvent

Which macromolecule has this structure?

• Carbohydrate

• Lipids

• Proteins

• Nucleic acids

It is the study of the chemistry of living things.

• Circulatory System

• Evaporation

• Biochemistry

• Zoology

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which of the following elements are found in all macromolecules? (Select all that apply).

• 
• 
• 
• 

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which of the macromolecules are structured in this way?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which macromolecule is structured this way?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What type of bond is found BETWEEN water molecules?

• hydrogen bonds

• ionic bonds

• nonpolar covalent bonds

• polar covalent bonds