Unit 1 & 2
Unit 3
Unit 4
Unit 5
Unit 6 & 7
100
There are four beakers that each contain 50 milliliters of liquid. Two of the beakers contain water and two contain ethanol. One beaker of each type of liquid is warm, and the other beaker of each type of liquid is cold. A thermometer and a stopwatch are available to take measurements. Which hypothesis can best be tested using these materials? A. Why does the type of liquid affect the rate of heat transfer? B. The temperature of the liquids can be measured with the thermometer. C. Heat is transferred in liquids when molecules collide with each other. D. The rate of temperature change for ethanol will differ from the rate for water.
What is D. The rate of temperature change for ethanol will differ from the rate for water?
100
Some cities use magnesium chloride (MgCl2) to keep roads from getting icy in the winter. Magnesium chloride forms ions in an aqueous solution. What ions does magnesium chloride form?
What is Mg+2 and Cl-?
100


                      Zn + H2SO4 --> ZnSO4 + H2

 What type of reaction does the equation represent?

What is synthesis reaction?
100
What characteristic of any object changes as it travels from Earth to space? Why?
What is weight because weight depends on gravity and there is less gravity on the moon?
100
Where is chemical energy found?
What is in the bonds of compounds (bonds between atoms)?
200
There is a graduated cylinder filled with 20mL of water. A screw is placed into the water, and the water rises to 35mL. What is the volume of the screw?
What is 15mL?
200


                      The United States government requires warning signs to be posted in areas where dihydrogen sulfide gas is present. What is the chemical formula for dihydrogen sulfide gas?
What is H2S?
200
In science class, students boil grated cabbage to produce dark purple, acidic cabbage juice. They then put several drops of the cabbage juice into an unidentified solution, which causes the cabbage juice to turn green. Adding acid to the solution makes the color turn purple again. What would the unidentified solution be classified as?
What is a base?
200
The difference between speed and velocity.
What is velocity is speed and direction (east, west, north, south)?
200
The amount of energy a transverse wave has is its
What is amplitude?
300
Classify the following substances (element, compound, mixture): Hydrogen, Sterling Silver, Water
What is H: element, SS: mixture, W: compound?
300
An isotope of Chromium has a mass of 54. How many neutrons does this isotope contain?
What is 30 neutrons?
300
 _?_ Fe + _?_ HCl  --> _?_ FeCl3 + _?_ H2

 Which set of numbers will balance this reaction equation?
What is 2,6,2,3?
300
If an object travels 6 km in 20 min, what is its speed in km/hr?
What is 18.18km/hr?
300
If a ball with a mass of 2kg (ball 1) collides with a mass with a mass of 6kg (ball 2), what will happen in terms of energy, ball movement, and speed?
What is the energy from the Ball 1 will be transferred into the ball 2, causing it to move right at a lower speed than ball 1 because it has more mass.
400
Describe the structure and movement of atoms in a solid, a liquid, and a gas.
What is solid: tightly pack, vibrate in place; liquid:loosely connected, slide past each other, moving faster; gas: bonds are completely broken, move rapidly (fastest), bouncing off each other
400
Group 17 elements usually form a _________ bond (type) with Group _________ elements.
What is ionic; 1?
400
6CO2 + 6H2O --> C6H12O6 + 6O2

 The reaction equation shows a common chemical reaction. Where does this reaction commonly occur?
What is in the leaves of plants?
400
A softball, whose mass is 2kg, is thrown at 5m/s^2 and travels 20m. What is the force the player used to throw the ball?
What is 10N?
400
Explain the relationship between electricity and magnetism and give an example.
What is the current flow of electricity creates a magnetic field; for example, a current in a copper wire affects a compass needle.
500
A scientist mixes two clear chemicals (room temperature) together. The resulting beaker appears yellow, warm, and produces bubbles. What type of change is this, and how do you know?
What is chemical change? Color change, temperature change, gas
500
Describe the Bohr model of Sodium. (How many electrons in each shell?, How many valance electrons? How many electrons does Na need to lose/gain to become stable? What would Na likely bond with? And bond type)
What is 1st: 2; 2nd 8; 3rd 1; 1 valance electron; lose 1; ionic bond with chlorine?
500
Balance the following reaction and identify the type of reaction. __Al + __O2 --> ___Al2O3
What is 4,3,2 and synthesis reaction?
500
A car travels at 10m/s for 5 seconds, then the car turns right at 10m/s. Did the car accelerate? Explain.
What is yes, the car did accelerate because acceleration is the change in speed or direction? When the car turned, even though its speed did not change, its direction did.
500
Explain the difference between a series and parallel circuit. What type of circuits would you want have in your house? Why?
What is series is one pathway for the current to flow through and parallel is multiple pathways for the current to flow through. Parallel because if one light bulb burns out in the house, you do not want all the lights in the house to go out.
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