Download Name KEY Period ______ 6th Grade Science Middle of Year I

Name KEY
Period ___________
6th Grade Science Middle of Year I Benchmark Review
Test on Tuesday, November 17th / Wednesday, November 18th
Let’s take a journey back through your composition book to review for your upcoming middle of year benchmark. When
you get to a set of questions, before you answer them, please find that section in your composition book and read over
it. Once you have re-read it, then try to answer the questions without looking at your composition book. Make sure to
check your work before you move on. Happy reviewing!
Energy
Objects can have kinetic energy and potential energy. KINETIC energy is due to an object’s MOTION and potential energy
is stored energy due to an object’s POSITION.
Describe the diver’s energy transformation at each height:
(Circle an answer.)
8 m (more PE than KE/more KE than PE/about equal between PE and KE)
6 m (more PE than KE/more KE than PE/about equal between PE and KE)
4 m (more PE than KE/more KE than PE/about equal between PE and KE)
2 m (more PE than KE/more KE than PE/about equal between PE and KE)
Forms of Energy
M
Form of Energy
Mechanical
Pictures or Examples
2 types: Potential, Kinetic
R
Radiant
C
Chemical
Food, batteries, fuel, gasoline, coal
E
Electrical
N
Nuclear
T
Thermal
Electricity
Heat
Energy Transformations
Toaster: Electrical  Thermal Energy
Flashlight: Chemical Energy (batteries)  Electrical and Radiant (and thermal)
Give an example of a device that converts electrical energy to mechanical energy: ceiling fan
Give an example of a device that converts chemical energy to mechanical energy: the human body (you eat food to give
yourself energy to move), gasoline to power a moving car
Properties of Matter
Malleable: easy to bend and shape
Brittle: breaks and shatters easily
Words to Use: Malleable, Insulator, Brittle, Good Conductor, High luster (shiny), Low luster (dull)
Malleability
Conductivity
Metals
Malleable
Good conductor
Shiny
Luster
Nonmetals
Brittle
Insulator
Dull
Metalloids
Malleable or brittle
Weak conductor
Shiny or dull
How do METALLOIDS compare to metal and nonmetals?
Metalloids have physical properties of both metals and nonmetals.
Think back to the Metals/Nonmetals lab.
A) Describe Copper: Shiny, easy to bend, good conductor, used in cooking
B) Describe Sulfur: brittle, yellow, dull, insulator
Evidence of a Chemical Change:
1. Color change ex) _Rust
2. Temperature change (increase or decrease)
3. Gases are being produced
4. A precipitate is produced
All chemical reactions result in a new product with different chemical properties.
Density
Density is the amount of matter or mass in a given space (volume). In order to calculate an object’s density, you need to
know its mass and its volume.
The formula for density is Density = Mass ÷ Volume
Examples:
A) Mass = 44.0g
B) Mass = 34 g
Volume = 100 mL
Volume = 100 mL
Density = 0.44 g/mL
Density = 0.34 g/mL
C) Mass = 72.0g
Volume = 8 mL
Density = 9 g/mL
Of the examples above (A-C), which is the densest? Sample C
What is the density of water? 1 g/mL
Describe how to determine if a substance will float in water. A substance will float in water if the substance’s density is…
A substance will float in water if the substance’s density is less than 1 g/mL. If its density is greater than 1 g/mL, the
substance will sink in water.
Liquid Q has a density of 0.75 g/mL. If I have a piece of pine wood that has a density of 0.5 g/mL, will it float? Explain.
The pine wood WILL float in Liquid Q because the pinewood has a lower density (0.5 g/mL) than Liquid Q (0.75g/mL).
Elements & Compounds
Element: pure substance made up of only 1 kind of atom
Compound: made up of more than one substance; has different kinds of atoms joined together
Classify each as an ELEMENT or a COMPOUND: A) No _E__
B) NO __C__
C) CO __C__
D) Co_E_ E) C _E__
Look at your Elements of the Earth’s Crust Graph.
What are the main elements that make up the Earth’s crust? Oxygen and silicon
True/False:
True/False:
True/False:
True/False:
True/False:
True/False:
Earth is made up of all elements on the Periodic Table equally.
Earth is made up of only a small, limited number of known elements.
An element is made up of only 1 type of atom
An element can be made up of multiple atoms as long as they are the same type.
Compounds are listed on the Periodic Table of Elements.
Elements are listed on the Periodic Table of Elements.
All substances listed on The Periodic Table are ___Elements_________________________________.
Look at your Periodic Table in your composition book and the graphic below.
Word bank: metalloids, nonmetals, dull metals, shiny metals
What are #1? _Dull Metals______________ #2 _Shiny Metals__________ #3_Metalloids_____ #4 __Nonmetals______