Ammer Unit 1 Review

How many valence electrons does sulfur have?

• 10

• 6

• 32

• 16

One liter of a solution with pH=-5 has how many more H* than one liter of a solution with pH==8?

• 3 times more

• 10 more times

• 300 times more

• 1000 more times

Atoms of a particular element that can possess different number of neutrons and therefore have a different molecular weight are called __________

Answer explanation

Isotopes all have the same number of protons but different number of neutrons

Nonpolar covalent bonds and polar covalent bonds differ in potential energy. Which has more?

A polysaccharide found in animal cells is

A non--competitive inhibitor would bind to the enzyme's

A fatty acid chains. is a glycerol molecule bonded to a phosphate group and 2

A molecule that accepts H+ ions after it dissociates in water is a((n)) ((be SPECIFIC))

You are a scientist in a laboratory and you need one mole ((mol)) of NaOH for a certain experiment. site How many molecules of this substance will equal one mole?

Is the pictured nitrogenous base below a purine or pyrimidine?