Chemical Changes
Mass/Volume/Density
Acids and Bases
Energy/Lenses
Space/Cells/Human Body
100
A teacher mixes two liquids which are the same temperature together in a glass. A thermometer in the glass shows a temperature increase of several degrees. This change in temperature indicates
What is a chemical change?
100
Define Volume and what is the formula to find volume
What is the amount of space an object takes up. V=LxWxH
100
Identify the range of acids on the ph scale from strongest to weakest.
What is 0-6
100
What are examples of chemical energy?
What is food, burning, batteries, and matches.
100
Name the 8 planets in the correct order What is in the center of our solar system?
What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune The SUN!
200
Name an evidence that a chemical change has occurred
What is gas formation, color change, temperature change, new substance formation, odor
200
Define mass and how does mass change when on the moon?
What is mass is the amount of matter in an object. Mass does not change on the moon. Weight changes because of the decreased gravity.
200
What is something that is neutral on the PH scale and about what number is it?
What is water-7
200
Mechanical energy as related to what kinds of objects?
What is compressed springs, stretched rubber bands, a bow and arrow, and a hammer and nail.
200
Name the 2 things plant cells have that animal cells do not have.
What is cell wall and chloroplasts.
300
Is ice melting a chemical or physical change? AND why...
What is a physical change because it is only a change of state of the matter (water)
300
Define Density and what is the formula for density?
What is the amount of mass per unit volume d= m _____ v
300
What is the PH level of bases from weakest to strongest?
What is 8-14
300
Which form of energy is stored in a flashlight battery?
What is chemical?
300
What controls the cell? What provides energy to the cell? What stores the waste of the cell?
What is nucleus mitochondria vacuole
400
A student places a solid effervescent (seltzer) tablet into a liquid. The student knows a chemical change has occurred because
What is gas formation/bubbles are created
400
If you see a jar of water and they want to see the change in water level after adding an object such as a rock what type of measurement are they trying to find density, mass, or volume?
What is volume?
400
Most of the time what is the color(s) of acids and bases on the Ph scale using a common indicator? Acids? Bases?
What is acids generally turn red or pink and bases generally turn green/blue/yellowish
400
Pick one member of your group to draw a concave and convex lens on the board and explain how light travels through these lenses.
What is Convex Lens- light comes together (Converge) Concave Lens- Light spreads out (Diverge)
400
What body system involves the lungs? What body system involves the heart, veins, and arteries? What body system gets rid of waste?
What is respiratory circulatory excretory
500
The materials in a compost pile undergone a chemical change because the compost pile feels warm. Why is this statement true?
What is a temperature change is evidence of a chemical change.
500
Students make four piles with an equal mass of dirt, rocks, sugar, and feathers. Which pile has the greatest volume? and WHY?
What is The feathers because it will take a lot of feathers to equal the same amount of mass as rocks etc. When you have a lot of something it will have a greater volume. Because it will take up more space....
500
List 3 things that are acids and 3 things that are bases
What is Acids are lemon juice, stomach acid, soda, vinegar, fruit juices, anything sour Bases are ammonia, baking soda, bleach, bar of soap, laundry detergent, anything soapy
500
Give one example of light energy, one example of chemical energy, one example of mechanical energy, and one example of heat energy.
What is (possible answers) Light: Sun, light bulbs Chemical: food, burning, batteries, lightning bugs Mechanical: anything moving Heat: hot stove top, refrigerator, air conditioner, heater
500
What is the geosphere, hydrosphere, and atmosphere and what areas does a tornado effect?
What is Land Water Air ALL 3 are effected!
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