J.R. S. answered • 05/01/17
Tutor
5.0
(145)
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
Wow. There's a lot here. And some have more than one answer, and some actually have NO answers that are listed.
#8 could be called Activation Energy, but that isn't exactly correct.
#18 the answer should be "rate of reaction", but that isn't a choice. No other choice is a correct answer.
#20 the answer should be "product(s)", but that isn't a choice. No other choice is a correct answer.
6. _C_energy stored in the chemical bonds of a substance is ____
7.E Chemical reactions always involve _____ changes.
8.__the energy required to break the bonds in the reactants for a chemical reaction to occur is _______.
9._F_ a reaction is _____ if more energy is released than supplied
10._M_ in an endothermic reaction energy is_____
11. _M__When bonds are broken energy is____
12. A_when bonds are formed energy is _____
13. B reaction rates are affected by: concentration, temperature, catalyst, mixing (stirring) and ____
14.B The smaller the _____ the faster the rate
15.O The starting substances that react are called_____,
16. _P_ the numbers in front of a chemical are called _____ and represent the number of units of each substance.
17._Q_ one ______ is the amount of a substance that contains 6.02X10(exponent 23) particles of that substance.
18.__ the speed with which products form from the reactants _____
19. _Q_ the substances that exsist before a chemical change (or reaction) takes place is/are _____
20.___ the new substance (s) that are formed during the chemical change.
7.E Chemical reactions always involve _____ changes.
8.__the energy required to break the bonds in the reactants for a chemical reaction to occur is _______.
9._F_ a reaction is _____ if more energy is released than supplied
10._M_ in an endothermic reaction energy is_____
11. _M__When bonds are broken energy is____
12. A_when bonds are formed energy is _____
13. B reaction rates are affected by: concentration, temperature, catalyst, mixing (stirring) and ____
14.B The smaller the _____ the faster the rate
15.O The starting substances that react are called_____,
16. _P_ the numbers in front of a chemical are called _____ and represent the number of units of each substance.
17._Q_ one ______ is the amount of a substance that contains 6.02X10(exponent 23) particles of that substance.
18.__ the speed with which products form from the reactants _____
19. _Q_ the substances that exsist before a chemical change (or reaction) takes place is/are _____
20.___ the new substance (s) that are formed during the chemical change.
