Compounds Study Guide
6th Grade
Correct Your Study Guide
1. What are the building blocks of elements?
Atoms
2. What are the building blocks of compounds?
Molecules
3. What are compounds made of? More than 1
element
4. How are compounds formed? Through a
chemical reaction
5. Which are essential for life? Compounds,
Elements, or both? Both
6. Which are found on Earth? Compounds,
Elements, or both? Both
7. List the evidence that a chemical
reaction has taken place.
1.
2.
3.
4.
Production of a gas
Change in temperature
Production of a precipitate (a solid)
Change in color
8.
How many elements are in the following chemical
formula? CO2 2
9. List the elements that are in the following chemical
formula. CO2 Carbon, Oxygen
10. How many atoms of each element are in the following
chemical formula? CO2 Carbon = 1, Oxygen = 2
11. What is the name of the 2 in the following formula?
CO2 subscript
12. Label the following as a compound or element:
element O
compound CO
element Na
element Fe
element Co
compound NaCl
13. Describe what happened when we mixed the
vinegar and baking soda in lab.
A chemical reaction had produced a gas.
14. How did you know how to dispose of the
chemicals we used in lab?
The teacher will instruct you on how to safely
dispose of chemicals in lab.
15. Label the following as a chemical or physical
change:
physical Paper tearing
physical Kool-Aid dissolving in water
physical Changes in state of matter
chemical Silver tarnishing
chemical Iron rusting
chemical Leaves changing colors in the fall
16. Iron (Fe) is solid metal. Oxygen(O) is a colorless gas.
Both are elements. When they are mixed, a new red
solid (Rust) is formed. What is occurring?
A chemical reaction is taking place. The elements are
combining to make a new substance. That new substance is a
compund.
17. CO is carbon monoxide. CO2 is carbon dioxide.
Describe the similarities and differences between
these two compounds.
Carbon monoxide and carbon dioxide are both
compounds. They are both made of the same two
elements: carbon and oxygen. However, they do not
have the same number of atoms in their molecules.
Carbon monoxide only has 1 atom of oxygen. Carbon
dioxide has 2 atoms of oxygen.
16. What is the best piece of equipment to measure an
exact volume of water in our lab?
Graduated Cylinder
Water Temperature
•
•
Time (min)
Temperature (°C)
1
2
3
4
5
10
15
X
25
30
A student heats a water sample and records its
temperature at the end of every minute, as
shown above. If this trend continues, what
temperature in degrees Celsius will the student
observe at the end of the eighth minute? 45
The student did not record the temperature for
the third minute. By analyzing her data, what
temperature was the water after 3 minutes had
passed? 20