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| When an acid is dissolved in water, what kind of solution could it be called? |
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| When a base is dissolved in water, what kind of solution could it be called? |
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| When a solution is neither acidic or alkaline, what could it be called? |
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| What name is given to chemicals which can show whether a solution is acidic, alkaline, or neutral? |
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List the acids...
(10 that were given to you) |
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| hydrochloric acid, gastric juices, vinegar, lemon juice, tomato juice, coffee, rain water, wine, coca-cola, and urine. |
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List the 2 neutrals..
(previously given) |
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List the bases or alkaline...
(8 previously given) |
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| sodium hydroxide, milk of magnesia, blood, baking soda, oven cleaner, limewater, toothpaste, and bleach. |
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| When an acid reacts with a base, it is called... |
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| How do you identify if a chemical reaction has occurred? |
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| change in color, temperature, formation of gas... etc. |
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| What is an uncharged particle? |
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| To specify the position of an object, you need to know... |
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| Latitude and longitude measure... |
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| A person on a moving train sees a car that appears to be stopped. A person outside the train sees both the car and the train moving. This example shows... |
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Which tells you how quickly an object changes position?
A. direction B. relative motion C. speed D. observation |
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| To find the speed of an object in motion, you need to measure... |
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| What formula shows the relationship among speed, time, and distance? |
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| One example of a vector is... |
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| A flat, or horizontal, line on a distance-time graph means that the speed is... |
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-True or False-
The change in velocity over time is called acceleration. |
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-True or False-
To calculate acceleration, you need to know both the final velocity and initial velocity of an object. |
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-True or False-
An airplane coming to a stop after landing has positive acceleration. |
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-True or False-
A flat line on a velocity-time graph shows an interval in which the velocity is zero. |
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Which of the following is true?
A. All objects move in the same direction.
B. Pushing on an object will change how it moves.
C. Pulling an object will not affect its motion
D. Most objects move at the same speed. |
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| B. Pushing on an object will change how it moves. |
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| The motion of an object changes when you change... |
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| either its speed or its direction |
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| Which units can be used to measure distance? |
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| Hitting a ball can change its |
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| A ball moves 5 meters in 10 seconds. What does this information tell you about the motion of the ball? |
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The y-axis is ___________ and the x-axis is ______________
on a line graph. |
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| A ball rolling on a flat table is an example of what kind of movement? |
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| A person jumping straight up and down is an example of what kind of movement? |
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| a location to which you can compare other locations |
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| What do you need to know to measure an object's position? |
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| direction and distance from a reference point |
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| What do you need to know to measure speed? |
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What does this statement tell you?
Joe won the bike race at 20 meters/second. |
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| A man runs 50 meters in 5 seconds. What is his speed? |
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| speed in a specific direction |
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| Velocity is a vector because it includes... |
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| Acceleration is the rate at which... |
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| velocity changes with time |
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| If a car keeps traveling at the same speed, how can its acceleration change? |
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| ________ is the change of position over time |
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| The overall force acting on an objectwhen all forces are combined is called... |
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| A force that can change the motion of an object is called an... |
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| A _____________ is a push or pull |
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| Objects remain at rest, and objects in motion remain in motion at the same velocity, unless acted on by an unbalanced force. This statement describes ______ |
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| The resistance of an object to a change in speed or direction is called ______ |
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| If you increase the force on a box, it will have ______ |
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| You push two chairs in a straight line with the same force. One chair is more massive than the other. The more massive chair will have __________ |
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| Any force that is keeping an object moving in a circle is known as... |
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| When an object exerts force on another object, the second object exerts a force back on the first object that is ... |
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| equal in size and opposite in direction |
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| Balanced forces act on... |
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| You sit down in a chair to watch your favorite television show. The action force is your weight pushing down on the chair. What is the reaction force? |
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| The chair pushing up on your body. |
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| The chemical formula for propane is C3H8. The subscripts tell you that propane has ... |
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| three atoms of carbon and eight atoms of hydrogen |
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| THe chemical formula for the simple sugar called glucose is C6H12O6. What does the formula tell you? |
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| Glucose has six atoms of carbon to twelve atoms of hydrogen to six atoms of oxygen. |
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| Polar covalent bonds are formed when... |
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Definition
| electrons are shared unequally |
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| A reaction in which a reactant breaks down into simpler products is called a ... |
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| In a chemical reaction the mass of the product is always... |
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| equal to the mass of the reactants |
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| What describes and endothermic reaction? |
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| absorbs energy and decreases temperature |
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| What is an example of water undergoing a chemical change? |
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| breaking down water to form hydrogen and oxygen |
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| Iron combines with oxygen in the air to form rust. Rust is an example of a ... |
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| All chemical reactions involve.. |
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| either absorbationor release of energy |
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| chemical bonds that form from the attraction of negative and positive ions. |
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| Iron hammered into a thin sheet |
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| Vinegar added to baking soda... |
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| The bond that allows metal atoms to share their electrons with one another. |
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| A pair of shared electrons between two atoms |
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| Uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound. |
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| A group of atoms that are held together by covalent bonds so that they move as a group. |
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| A covalent bond in which the electrons are share unequally. |
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| The force of attraction between positive and negative ions |
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| A number written to the right of the chemical symbol and slightly below it |
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| Elena is riding her bicycle. She begins pedaling harder. What do you predict will happen? |
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| A mover exerts force on a piano. The piano exerts force back. Together, these forces are known as an... |
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| action/reaction force pair |
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| If you subtract an objects final velocity from its initial velocity and divide by the time it took to change velocity, you are finding... |
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| You push two chairs in a straight line with the same force. One chair is more massive than the other. The more massive chair will have... |
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Definition
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| Jenna knows that a friend runs 100m in 8 s. She could use this to calculate her friend's... |
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| Motion is a change in ... |
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| On a velocity-time graph, a line that is slanted down from the left to right shows... |
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| If you increase the force on a box, it will have... |
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Definition
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| A flat or horizontal line on a distance-time graph means that the speed is... |
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Definition
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| Speed in a specific direction is .. |
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| One way to decrease acceleration is to... |
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| a change in velocity over time |
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| If one force is balanced by another force, th.. |
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| effect is the same as no force at all. |
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| Jess drives at a steady velocity. Her acceleration is... |
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| in the same direction as her motion |
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| Acceleration measures a change in... |
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| James combines all the forces acting on a tennis ball. He is finding the... |
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