7
Si
Science Homework
Name: _____________________________________
Due: Friday, September 27
Teacher: ________________________ Period: ____
Science
Part I: Vocabulary
Instructions: Using the list of vocabulary words below, write the word next to its correct definition. Some
words may not be used, but you are expected to know all of them.
 Element
 Atoms
 Nucleus
 Protons
 Electrons
 Neutrons
 Molecules
 Compounds
 Organic Compound
1. ______________________ are made up of neutrons, protons (+), and electrons (-) and are the smallest
unit of matter.
2. ______________________ are created when any two atoms combine together. Oxygen gas (O2), and
ammonia (NH3), are both examples.
3. ______________________ are created when two or more different elements combine together.
Ammonia (NH3), and glucose (C6H12O2), are both examples.
4. ______________________, unlike protons, have a negative charge and surround the nucleus in a cloud.
5. ______________________are created when carbon (C) and hydrogen (H) atoms combine to form a
compound, which may also include the elements nitrogen (N), oxygen (O), and phosphorus (P).
6. ______________________ and protons make up the nucleus and together they make up most of the
atomic mass.
Part II: Organic Compounds
Instructions:
Substance
Classification
Organic or
Inorganic
Organic
Ethanol
Chemical
Formula
Substance
Organic or
Inorganic
C 2 H6 O
Na
Chlorine Gas
Methane
Water
Classification
Methylamine
Chemical
Formula
7
Si
Science
Science Homework
Name: _____________________________________
Due: Friday, September 27
Teacher: ________________________ Period: ____
Part III: Cell Theory_____________________________________________________________________
Instructions: Use the words in the word bank to complete the CLOZE passeage below.
Part IV: Plant Cells _______________________________________
___________________
____
Cell Wall
Plant cells have a cell wall. Animal cells do not have a cell wall.
What is the function of a cell wall? Why does a plant cell have a
cell wall?
_________________________________________________
_________________________________________________
7
Si
Science
Science Homework
Name: _____________________________________
Due: Friday, September 27
Teacher: ________________________ Period: ____