Term
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Definition
| An objects resistance to change in motion |
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Term
| Explain Newton's First Law of Motion. |
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Definition
| Newton's first law is the law of inertia - an object at rest remains at rest, an object in motion remains in motion at a constant speed and in the same direction until acted on by an unbalanced force. |
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Term
| Explain Newton's Second Law. |
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Definition
2nd Law is the Law of Mass and Acceleration -
Force = Mass x Acceleration
more force = more acceleration
less mass = more acceleration |
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Term
| Explain Newton's Third Law |
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Definition
| Newton's third law states that for every action there is an equal and opposite reaction |
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Term
| Describe the motion of an object that has balanced forces acting on it. |
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Definition
| If forces are balanced there is no change in motion. |
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Term
| What type of force causes a change in motion? |
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Definition
| Unbalanced forces cause a change in motion |
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Term
| How can you tell if a chemcial equation obeys the law of conservation of mass? |
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Definition
| Count the number of atoms of each element on both sides of the equation - if the numbers are the same the equation is balanced and it follows the law of conservation of mass |
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Term
2H2O -------> 2H2 + O2
Identify the reactants.
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Definition
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Term
2H2O -------> 2H2 + O2
Identify the products. |
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Definition
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Term
2H2O -------> 2H2 + O2
How many elements are involved in this reaction? |
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Definition
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Term
| ___g of potassium reacts with 32g of oxygen to produce 188g of potassium oxide |
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Definition
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Term
| What is the velocity of a person who runs 100 meters in 20 seconds going east on Highland Knolls? |
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Definition
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Term
| Motion is change in ____________ |
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Definition
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Term
| What are three ways an object can accelerate? |
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Definition
1. Speed up
2. Slow down
3. Change direction |
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Term
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Definition
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Term
| A high speed train travels with an average speed of 50 km/hr for 5 hrs. How far does the train travel? |
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Definition
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Term
| What unit is acceleration measured in? |
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Definition
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Term
| What unit is used to measure force? |
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Definition
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Term
CH3COOH
How many elements are in this formula? |
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Definition
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Term
4 Ba(OH)2
How many total atoms are there? |
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Definition
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Term
| What evidence indicates that a chemcial reaction has occurred? |
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Definition
- change in temperature
- change in color
- new substance produced
- light produced
- gas produced
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Term
Calculate the net force and give the direction of motion for the car.
[image] |
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Definition
| Net force is 1N - motion will be towards the right |
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Term
| A bike has a mass of 20kg. A small car has a mass of 1000kg. A force is applied to accelerate the car to 1m/s2. If the same force was applied to the bike, what would the bikes acceleration be?[image] |
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Definition
50 m/s2
For the car: F=ma = 1000 x 1 = 1000N
For the bike:
A= F/m= 1000/20 = 50m/s2 |
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Term
| What subatomic particle is used to identify an element? |
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Definition
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Term
| What determines an elements reactivity? |
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Definition
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Term
| What particles have the same mass and location in an atom? |
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Definition
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Term
| On the periodic table of elements, members of the same family/group have the same number of what? |
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Definition
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Term
| On the periodic table of elements, members of the same period (row) have the same number of what? |
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Definition
| Energy levels/electron shells |
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Term
Describe the motion of the ball shown in the graph:
[image]
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Definition
| The ball traveled at a constant speed from 0 - 2 seconds. From 2-4 seconds the ball stopped moving. from 4-5 seconds the ball moved back towards its starting point. |
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