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Unit 2 Exam: Molecules: Beat the Teacher

Total questions: 23

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

What does this image represent?

a)

Atom

b)

Mickey Mouse hat that you get at Disney Land!

c)

Molecule, specifically, a water molecule

d)

Marshmallows

2.

What is the chemical formula for this molecule?

a)

CA

b)

CO2

c)

OC

d)

CD

3.

A molecule is ______________________ stuck together, usually through ____________________ .

a)

a group of people / gorilla glue

b)

a group of atom / gorilla glue

c)

a group of atoms / chemical bonds

d)

bunch of spheres / chemical bonds

4.

Different types of ____________ can form different types of _____________________ .

a)

hydrogens / chemical bonds

b)

atoms / chemical bonds

c)

atoms / colorful spheres

d)

colorful spheres / chemical bonds

5.

When atoms bond to form molecules, like the water molecule, the atoms become __________ because the they fill the number of electrons in the outermost orbital.

a)

reactive

b)

happy

c)

stable

d)

freaked out

6.

Food is a source of large molecules needed to sustain our life. These large molecules are called _________________ .

a)

biomolecules

b)

bio baby bunting

c)

biologically impossible

d)

Big Macs

7.

Lipids, carbohydrates, nucleic acids and __________ are all examples of biomolecules.

a)

rocks

b)

salt

c)

cake

d)

proteins

8.

Lipids are better known as ________ . 

a)

fungus

b)

fabulous

c)

Fantastic Four

d)

fats

9.

For this question, you MUST pick three (3) answers.

Identify the THREE functions of lipids from the list below.

a)

insulation

b)

long term energy

c)

enzymes

d)

short term energy

e)

cell membrane composition

10.

What is the chemical formula for Carbon Monoxide?

a)

Co

b)

CO2

c)

OC

d)

CO

11.

How many Nitrogen atoms are there?

a)

1

b)

2

c)

3

d)

4

12.
A recipe for a chemical substance is called a ________ _________.
a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
13.

Ball and stick models (which we used in class) highlight the ________ between atoms.

a)

bonds

b)

bands

c)

bubbles

d)

pretzels

14.

Even though atoms are small, huge ______________ can form if _____________ happen to be properly arranged.

a)

bubbles/ bonds

b)

molecules / bubbles

c)

monsters / bonds

d)

molecules / bonds

15.

Glucose is a _________ molecule with a total of 24 atoms; 12 ____________, 6 __________, and 6 __________.

a)

sugar . hydrogen . carbon . oxygen

b)

sugar . helium . cadmium . oxygen

c)

protein . hydrogen . carbon . oxygen

d)

fatty acid . hydrogen . carbon . oxygen

16.

A water molecule (H2O) contains a total of ___ atoms.

a)

1

b)

2

c)

3

d)

4

17.

What's the chemical formula for water?

a)

What is H2O

b)

What is H3O

c)

CO2

d)

NH3

18.

_______________________ are a great, fast source of ______________ .

a)

Carbohydrates / energy

b)

Lipids / energy

c)

Proteins / energy

d)

Carbohydrates / happy meals

19.

What is the chemical formula of this molecule?

a)

CH4

b)

CH3

c)

C2H4

d)

NH3

20.

How can only 92-95 natural elements create the millions of things we have?

a)

Two elements can combine to make a thing. So there are 92x2 possibilities.

b)

There are really only 95 things on Earth.

c)

The elements can be combined in unlimited proportions and quantities to create millions of things.

d)

When elements combine they make unlimited kinds of atoms.

21.

What are the building blocks of most biomolecules(nucleic acids, proteins and carbohydrates) called?

a)

polymers

b)

trimonomers

c)

dimonomers

d)

monomers

22.

What is the monomer of a carbohydrate?

a)

disaccharide

b)

monosaccharide

c)

polysaccharide

d)

mononucleosis

23.

For this question, you MUST choose three (3) answers.

 

What are three (3) functions of protein?

a)

acting as enzymes

b)

muscle development

c)

making powered supplements 

d)

fast energy

e)

working in the immune system