District Benchmark Science 6th Grade
Friday, December 12th
Topics to be covered:
Obj
6.5 A
6.5 C
Science Skill
Six
Weeks?
1st
1st
# of
Questions
1
4
Know that an element is a pure substance represented by chemical symbols.
Know the difference between an element and a compound: symbols,
diagrams, and definitions.
6.5 D Chemical change happens when a new substance is formed. Chemical
2nd
4
change: produces a gas, change in temp, precipitate, color change.
6.6 A Compare metals, nonmetals, & metalloids using physical properties: luster,
1st
3
conductivity, malleability
2
6.7 A Know the advantages & disadvantages of various Energy Resources
3rd
rd
6.7 B Manage energy resources at home, community, and school.
3
2
nd
6.8 A Compare & contrast Potential & Kinetic Energy
2
3
nd
6.8 E Inclined Planes & Pulleys can change the force needed to move an object
2
2
Know how planes & pulleys change force or direction.
6.9 A Thermal energy transfer: conduction, convection, radiation
2nd
3
nd
6.9 B Thermal energy moves from warm to cool.
2
2
nd
6.9 C Energy transformations: flashlight = chemical to electrical
2
2
The following questions were pulled from reviews and study guides this year.
1. Label the following as an element, compound, or neither:
a. Ni element
b. H2O compound
c. al neither d. NaCl compound e. O element
2. How many elements are found in the following chemical formulas:
a. NaCl 2: Na & Cl
b. H2O 2: H & O
c. H2SO4 3: H, S, O
d. Al 1: Al
3. Can elements be separated into simpler substances?
No. Elements are a pure substance that cannot be broken down easily.
4. What are the define and describe:
Elements – pure substance that cannot be broken down. One capital letter in symbol.
One picture in diagram.
Compounds – two or more of different elements chemically combined. More than one
capital letter. Two or more pictures touching in a diagram.
Mixtures – Can be easily separated. Diagram: two or more different pictures not
touching. Can be compounds & elements, compounds & different compounds, or
elements & different elements
5. Donna was making a salad to eat with her dinner. She put lettuce, tomatoes,
cucumbers, and bacon bits in her salad. Why would Donna’s salad NOT be
considered a compound? It can be easily separated. You can pick apart the different
parts. It is a mixture. Not chemically bonded/combined.
6. Does the following picture represent an element or compound? compound
7. What are 3 characteristics of metals? Malleable/Ductile, Conductors, Metallic Luster
8. What are 3 characteristics of non-metals? Semi-conductors, some malleable, some
luster
9. What is a metalloid? Brittle, non-conductors, dull luster
10. What are you describing when you use each of the following words:
Malleable – is able to be bent. Ductile – can be twisted into a wire Brittle – breaks
when bent Luster – shiny. Metallic luster shines like a piece of metal.
11. Where are Metals, Nonmetals, & Metalloids on the Periodic Table? Metals: Left of
Zig-zag line. Nonmetals: Right of zig-zag line. Metalloids: on the zig-zag line.
12. What is the difference between a chemical and physical change? Physical change
can be easily put back. Does not change what it is. (ex: melt, freeze, evaporate, tear,
cut, bend.) Chemical Change: changes what the object is. Makes something new.
Cannot be easily put back. (ex: burn, rust, rotting food)
13. What are the 5 signs that a chemical change has occurred?
A precipitate is formed (something new). Smoke seen. Temperature change without
heat. Color change from nothing.
14. Identify the following as chemical or physical change:
a. Camp fire b. Fireworks c. Melting ice cream d. Mowing the grass
Chemical
chemical
physical
physical
Know how to find: (Draw a Picture & label)
15.Highest Potential
16. Lowest Potential
17. Highest Kinetic
e. Baking cookies
chemical
18. Lowest Kinetic
19. How does potential energy affect kinetic energy? The more potential, the more
kinetic. Higher the height = greater Pot and greater Kinetic. More Mass = greater
potential & greater kinetic.
20. A Golfer swinging at a ball – potential energy / kinetic energy – where are they
increasing and decreasing? Before the swing = potential. During the swing = Kinetic.
Increasing Kinetic / Decreasing Potential when swinging towards the ball. Increasing
Potential / Decreasing kinetic when pulling back before the swing.
21. How does energy transfer in a battery operated object / toy? Battery has Chemical.
Changes to mechanical for toy to move.
22. How does height affect Potential and Kinetic Energy? Higher the height = greater Pot
and greater Kinetic.
23. How does mass affect Potential and Kinetic Energy? More Mass = greater potential &
greater kinetic.
24. Describe the Law of Conservation of Energy Energy cannot be created nor
destroyed. It can only change form.
25. Describe Thermal Energy Transfer Thermal energy moves from an area of warm to
an area of cold.
26. Draw, explain and give an example of Conduction, Convection, and Radiation
Conduction: touch
Convection: air / liquids
Radiation: electromagnetic waves
27. Draw a roller coaster. Label:
a. Greatest Potential b. Greatest Kinetic
d. Increasing Potential e. Decreasing Kinetic
c. Increasing Kinetic
f. Decreasing Potential
28. Describe the energy transformations in:
a. A fan electric to mechanical
b. Battery flashlight chemical to light
c. A pencil sharpener mechanical to mechanical
d. Microwave electric to
sound, light, mechanical
e. A computer electric to sound, light, mechanical
f. An overhead light electric
to light g. A fire chemical to light & sound & thermal
h. A plant light to
chemical
29. What does a Fixed Pulley do to help move an object (what changes)? Changes the
direction of the pull only
30. What does a Moveable Pulley do to help move an object (what changes)? Changes
the force need to move only.
31. List 5 examples of Kinetic Energy. Running, turning, bounce, talk, write, walk,
32. List 5 examples of Potential Energy. Sit, sleep, read, top of swing, rock on wall,
33. On a swing, when would the Potential and Kinetic Energy be equal? Coming up and
going down at same horizontal spot.
Some Vocabulary to know
Electrical Energy
Solar Energy
Thermal Energy
Chemical Energy
Mechanical Energy
Electromagnetic Energy
Light energy
Mechanical Energy
Kinetic Energy
Potential Energy
Inclined Plane
Pulley
Fixed Pulley
Moveable Pulley
Force
Convection
Conduction
Radiation
Nuclear Energy
Know: Advantages & Disadvantages of: All Non-Renewable resources. All Renewable resources. All
Perpetual/Inexhaustible resources.
Know ways to conserve Energy / Electricity in: Home, School, Community.
Know ways to conserve Water in: Home, School, Community.