The energy needed to get a reaction started is the

a. enzyme energy.

b. activation energy.

c. catalyst energy.

d. chemical energy.

Which elements cannot have more than an octet of electrons? Select all that apply C S O N Br

What is the correct unabbreviated electron configuration of the following?: vanadium: strontium: carbon:

What would happen to a plant that could not obtain carbon dioxide? A. it would not be able to reproduce B. it would not be able to eliminate waste products C. it would not be able to absorb minerals D. it would not be able to make food

What happens when light strikes an opaque object? A) All of the light passes through the object. B) All of the light is reflected by the object. C) None of the light passes through the object.

Why would tape attract to your finger Use electric charge

Can beryllium be broken down by chemical change?

What is the total number of atoms in this formula? NaHCO3

An object was measured by a worker as 14.6 cm long, however, the manufacturer specifications list the length of the object at 14.4 cm. What is the percent error in the workers measurement

Does The human brain retains more information than all the books in the Library of Congress

Will an object with a density of 0.97 g/ml float or sink in water