midyear exam 2016 grade 7 - welcome to science and...
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MidYear Exam 2016 Grade 7
Date: Wednesday, January 27, 2016 Time: 1:00 to 3:00 There are many ways to study. Here are a few tips and tricks to help you prepare for your exam. These are just ideas, you don’t necessarily have to do them all.
1. Choose a quiet place in your house. 2. Turn off the TV, video games, computer and phone. 3. Prepare notes on index cards. 4. Write down your questions to ask your teacher. 5. Ask questions with your friends. 6. Rewrite your notes.
Exam Topics: Safety in the Science Lab
A. Safety symbols, (flammable, explosive, toxic). B. Safety rules.
The Scientific Method
A. Qualitative and quantitative observations a. Describe each and give examples.
B. Question and hypothesis a. Write a hypothesis based on the question asked.
C. Independant and dependant variables. a. Describe each b. Give examples c. Which variable corresponds with the xaxis and which corresponds with the
yaxis. d. Where the variables are presented in a graph.
D. Table of Results a. Draw a table with a ruler. b. Which column corresponds with the xaxis and which with the yaxis. c. Create a table using information from a paragraph.
E. Graphing a. Draw a line graph and a bar graph using a ruler. b. Label the title and the axes. c. Make a proper scale.
Properties of Matter
A. Characteristic and noncharacteristic properties. a. What is the difference? b. Give example for each.
B. Qualitative and quantitative properties. a. What is the difference? b. Give example for each.
C. Mass a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used.
D. Volume a. Definition b. How it is measured 3 ways irregular solid, regular solid and liquid. c. Units of measurement. d. Measurement tools and how they are used.
E. Temperature a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used.
F. Acidity and Alkalinity et basicité a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used.
G. Conductivity a. Definition b. Measurement tool
H. Boiling point and melting point, (point of fusion). a. Definitions b. Measurement tool c. Units of measurement
States of Matter
A. Solid, liquid and gas B. Their particles and the links between particles. C. Their volumes in a container. D. Transformations, (transitions), of state initial state and final state. E. The triangle that represents the transitions.
Mixtures
A. Homogeneous and heterogeneous mixtures definitions and examples. B. Pure substances definitions and examples.
Review Questions What are the steps of the Scientific Method? Give each step and a short definition to differentiate them.
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What if the difference between a quantitative observation and a qualitative observation? ______________________________________________________________________
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Name the 5 senses needed to make a qualitative observation. 1) ____________________
2) ____________________
3) ____________________
4) ____________________
5) ____________________
Name 5 measurement tools we can use to make quantitative observations.
1) ___________________
2) ___________________
3) ___________________
4) ___________________
5) ___________________
Make notes for each step of the Scientific Method
My Notes My Questions
Hypothesis
Independent Variable ● Definition ● Which axis of a
graph? ● Which column in a
table of results?
Dependent Variable ● Definition ● Which axis of a
graph?
● Which column in a table of results?
Line Graph ● Draw it with a
ruler. ● Identify title, and
each axis. ● Create a scale for
each axis.
Bar Graph ● Draw it with a
ruler. ● Identify title, and
each axis. ● Create a scale for
each axis.
Table of Results ● Draw one with a
ruler. ● Which column is
the xaxis and which is the yaxis?
What is the definition of mass? ____________________________________________________________________________
________________________________________________________________________________ Give 3 measurement units used to represent mass, on the same scale.
_______________, _______________, _______________. Which unit of measure would you use to find the mass of:
○ an orange: ____________ ○ a human: __________ ○ a pen: _______________ ○ a tylenol: ___________ ○ a TV: ___________
Explain how to use a triplebeam balance.
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What is the definition of volume? ______________________________________________________________________
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Name the three units of measure and the measurement tools needed to find the volume of:
Regular solid ____________________________________________________________
Irregular solid ___________________________________________________________ Liquid _________________________________________________________________
Which unit of measure would you use to find the volume of:
○ an orange: ____________________ ○ juice: _________________________ ○ a pen: ________________________ ○ a DVD case: ___________________ ○ a dictionary: ___________________
What is a thermometer used for?
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What is the definition of temperature?
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Why did we use «0» and «100» for the Celsius scale?
➔ 0 indicates:___________________________________________
➔ 100 indicates:_________________________________________
Complete the diagram by writing in the words ACID, BASE and NEUTRAL where they belong.
What do we use litmus paper for?
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Complete the table below:
pH level Red Litmus Paper Test
Blue Litmus Paper Test
_______________ Less than 7 ________________ Red
_______________ ________________ Blue Blue
Neutral 7 ________________ ________________
Place the substances in order of strongest to weakest in the table below.
Substances
Lemon Juice PH=3 Battery Acid PH=1 Soap PH=12 Coffee PH=5 Baking Soda PH=8 Bleach PH=13 Vinegar PH=4 Windex PH=9
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Acid Base
What are some qualitative and quantitative properties?
Quantitative Qualitative
What are the characteristic and noncharacteristic properties?
Characteristic NonCharacteristic
Name the three states and matter, discuss links between their particles and describe the shape in their containers.
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Draw each state of matter in a container.
Name the initial states and the final state for each transition
Transition Initial State Final State
Sublimation
Evaporation
Fusion
Boiling
Solidification
Condensation
Solid Condensation
Complete the triangle:
Create a line graph. Indicate the title and label the axes.
Time (seconds) Temperature (℃)
0 10
2 20
4 30
6 40
8 50
10 60
12 70
Create a bar graph and a table of results. Indicate the title and label the axes. 25 students like hockey. 40 students like baseball. 30 students like soccer. 15 students like volleyball.
Compare homogeneous and heterogeneous mixtures.
Homogeneous Mixtures Heterogeneous Mixtures
Definition
Examples
Drawing of Particles
Describe a pure substance and give examples: ____________________________________________________________________________________________________________________________________________________________ Indicate whether each substance in the box below are heterogenous or homogeneous.
Milk and Flour Greek Salad Tap Water Salt and Water Concrete Milk and Cereal Steel Air Carbonated Water Brass Fruit Salad
Indicate whether each substance in the images below are heterogenous or homogeneous.