1. Bell work 11-20
7th Grade

2. # th grade
Matter is composed of extremely small particles, too small to be seen with a classroom microscope, called_______.
A single _______ has mass and takes up space.
_______ are composed of one kind of atom.
_______ are composed of two or more different substances that retain their own individual properties and are combined physically(mixed together).
An ________ is a test to find out something.
atoms
atom
Elements
Mixtures
experiment

3. #12 7th grade
The respiratory system brings oxygen into the body. This oxygen is used in what cell process?
List the organization of life in order of increasing complexity.
What condition results when the body’s cells fail to properly use insulin or the pancreas fails to produce enough insulin?
Repeated exposure to the sun can lead to ________.
What organ works as both a respiratory organ and an excretory organ?
respiration
Cell, tissue, organ, organ system, organism
diabetes
Skin cancer
lungs

4. #13 7th grade
The purpose of repeating an experiment is to ________________.
What are the levels of organization of ecosystems in order from smallest to largest?
What is the smallest particle of an element?
When two or more substances are in the same place but not chemically combined, they form a(n) ___________.
All metals except mercury are ____________.
Confirm conclusions
Species, population, community, ecosystem
atom
mixture
Solid at room temperature

5. #14 7th grade
Table salt has the formula NaCl. Which elements make up table salt?
A low pH value tells you that a solution is a(n) __________.
How many electrons does a nickel atom have?
Elements within the same group in the periodic table have similar properties because they all have the same _________.
In a chemical reaction, the total mass of the reactants is
Na and Cl
acid 28
Valance electrons
= to the total mass of the products

6. #15 7th grade 9/19/13
When an animal moves into an ecosystem, it is called __________.
When an animal moves out of an ecosystem, it is called?
The temperature and amount of rainfall in an area is known as _______.
A pictorial way to show the flow of energy through the trophic levels is called _______________.
What is the maximum number of organisms an environment can support called?
immigration
emigration
climate
Food chain
Carrying capacity

7. #16
1. A substance whose smallest units are made of atoms of more than one element is a _______?
2. How many atoms of hydrogen are signified by the formula 6 H2O? 12
3. Two or more substances that do NOT combine to form a new substance is a ____________.
mixture
4. What is the name of the chart, composed by chemists that arranges all the known elements?
periodic table
5. What is the term for matter composed of only a single kind of atom?
element
Compound

8. # th grade
The purpose of repeating an experiment is to ________________.
What are the levels of organization of ecosystems in order from smallest to largest?
What is the smallest particle of an element?
When two or more substances are in the same place but not chemically combined, they form a(n) ___________.
What is the most basic living or structural unit of all life? ____________.
Confirm conclusions
Species, population, community, ecosystem
atom
mixture
A cell

9. #18 7th grade 1. What are the products of photosynthesis?
(C6H12O6 and O2)
2. What are the elements of glucose?
(carbon, hydrogen, and oxygen)
3. What is the difference between cell division in plant cells and animal cells?
(animal cells pinch off and plant cells form a cell wall)
4. What is the chemical formula for carbon dioxide?
(CO2)
5. What is a millisecond?
1/1000 second

10. #19 7th grade What are the reactants of photosynthesis?
(water and carbon dioxide)
2. What is the formula for carbon dioxide?
(CO2)
3. What is the equation for respiration?
( C6H12O6 + 6O2  6CO2 + 6H2O)
4. Which structure allows materials to enter and leave the cell?
cell membrane
5. What are the 4 pathogens?
(protists, fungi, virus, bacteria)

11. #20 7th grade
1. Who is Mendel?
(Father of genetics)
2. What happens as the cell goes through mitosis?
(2 daughter cells form)
3. What is a decameter?
(10 meters)
4. What is replication?
(DNA copies itself)
5. Does replication occur during the second cycle of meiosis?
(no)