3rd Q Review # 4 Question Preview (ID: 56619)


CHEM.

which element is a gas at STP?
a) Cu
b) Cl
c) S
d) P

calculating the mass, in grams, of a 2-mole sample of O2
a) 16
b) 32
c) 64
d) 2

What heat formula do you use for the key word MELT
a) Q=MCAT
b) Q=MHf
c) Q=MHv
d)

According to table M , what color is thymol blue in a pH of 10
a) blue
b) green
c) yellow
d) red

according to table M , what color is methyl orange in a pH of 11
a) orange
b) blue
c) green
d) yellow

Which is NOT a metalloid ?
a) Te
b) Ge
c) Sb
d) Po

What is the concentration of an aqueous solution that contains 1.5 moles of NaCl in 500 milliliters of this solution?
a) 1
b) 3
c) 2
d) 1.5

Which measure concentration ?
a) ATM
b) Grams
c) PPM
d) L

which is a metalloid ?
a) S
b) Si
c) Pb
d) C

When a catalyst is added
a) it creates an alternative pathway that lowers activation energy
b) it creates an alternative pathway that raises activation energy
c)
d)

A joule is a unit of
a) energy
b) length
c) volume
d) pressure

When a reversible reaction is at equilibrium, the concentration of products and the concentration of reactants must be
a) equal
b) constant
c) increasing
d) decreasing

A substance that produces H+ in solution is
a) an arrhenius acid
b) an arrhenius base
c) a gas
d) an isotope

An alternative acid base theory stats
a) acids donate OH-
b) bases accept OH-
c) acid accept H+
d) bases accept H+

What is the electronegativity difference of a H-0 bond ?
a) 1
b) .5
c) 1.2
d) .6

Which of the following compound has a symmetrical distribution of charge
a) NH3
b) H20
c) F2
d) PCl3

what is the maximum # of electrons that can fit in the third electron shell?
a) 6
b) 18
c) 8
d) 10

Which has a sea of moving (mobile) electrons
a) CH4
b) NH3
c) NaCl
d) Ag

Compounds can be broken down
a) chemically
b) physically
c) not at all
d)

Methane does not dissolve in water , based on this methane is
a) polar
b) non polar
c)
d)

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