Chemistry Of Life
………………………………………………….Date:………
____
The space surrounding the nucleus of an atom contains
a.protons.
c. neutrons.
b. electrons
.
d. ions.
_B 4
. A covalent bond is formed as the result of
a. Transferring electrons
b. Sharing electrons
c. Transferring protons
__
c
___ 4
. Una solucion es
a. La rotura de enlaces quimicos
b. una reaccion quimicat
c. Es una mezcla de dos o mas sustancias donde los components estan bien
distribuidos.
Aa08
a 5. . Water molecules are polar, with
a. The oxygen side being slightly negative and the hydrogen side being slightly positive.
b. The oxygen and hydrogen side being slightly positive
c.The oxygen and hydrogen side have the same charge.
__carbohydrates__6. Cual de los siguientes compuestos organicos es la principal Fuente de
energia para los seres vivos?
● Carbohydrates
● Lipids
● ANuclei acid
●Proteins
_
c
__7. What is the process that chengfang one set of chemicals into another set of chemicals?
a. Cohesión
b. Adhesión c. Chemical reaction.
_c
8. In chemical reactions, the atoms are
a. Created
b. Destroyed
c. Rearranged
d. Neutralized
____a__ 9.
When hydrogen and oxygen combine to form water, water
would be
a. a product.c. both a product and a reactant.
b. a reactant. d. neither a product nor a reactant
__d ____ 10.
Which of the following makes up a molecule of water? a. one atom of hydrogen and one atom of oxygen
b. one atom of sodium and one atom of chlorine
. one atom of hydrogen and two atoms of oxygen d. two atoms of hydrogen and one atom of oxygen
1. __b____ 11. El cosmpuesto mas abundante en los seres vivos esd
a. Carbon dioxide. C. cloruro de sodio
b....
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