2010 Week 3 - Chemistry - Reactions and inorganic review

Which of the following increases the rate of a reaction?

• cold temperatures

• absence of an enzyme

• increasing reactant concentration

• adding more solvent

Tags

NGSS.HS-PS1-5

What type of reaction releases energy?

• equilibrium reaction

• anabolic reaction

• endergonic reaction

• catabolic reaction

Tags

NGSS.HS-PS1-4

The process of digesting food breaks large food particles into smaller particles. This is best described as a(n):

• exchange reaction

• catabolic reaction

• anabolic reaction

• neutralization reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of compound is NOT likely to dissolve in water?

• ionic compound

• polar covalent compound

• nonpolar covalent compound

What chemical binds (accepts) free hydrogen ions in solution?

• acid

• salt

• base

• water

Which of the following represents the strongest acidic solution?

• pH 1

• pH 4

• pH 6

• pH 9

Hydrolysis of a polymer will produce:

• electrolytes

• buffer

• monomers

• enzymes

What is the function of a buffer system?

• lower activation energy of a reaction

• act as a lubricant

• absorb heat without changing temperature

• prevent large changes in pH of a solution

Salts are held together by:

• single covalent bonds

• nonpolar covalent bonds

• hydrogen bonds

• ionic bonds

Tags

NGSS.HS-PS2-4