Definitions-6
A point against which motion is measured.
What is a reference point?
Compound made of only two elements.
What are binary compounds?
A chemical reaction that releases energy to its surroundings.
What is an exothermic reaction?
The first element in the compound is magnesium, so it is a cation and will have the same name as the element. Chlorine is the anion, so it will be changed to chloride. The name of this compound is__________________________________________.
What is magnesium chloride?
A student is studying a caterpillar as it crawls on a wall. ?The caterpillar walks 20 cm up, then 10 cm to the left, then 20 cm down, and finally 10 cm to the right. It's total displacement is________________.
What is zero?
The distance an object travels plus the direction from the starting point.
What is displacement?
A chemical reaction in which two or more substances react to form a single compound.
What is a synthesis reaction?
A chemical reaction that absorbs energy from its surroundings.
What is a endothermic reaction?
Silicon (Si) and chlorine (Cl) are both nonmetals and will bond to form SiCl, as a covalent molecule.
What is silicon tetrachloride?
Tells you how quickly and in what direction an object is moving in relation to a reference point.
What is velocity?
The distance an object travels during a certain amount of time.
What is speed?
A chemical reaction in which a compound breaks down into two or more simplier substances.
What is a decomposition reaction?
A physical measurement that contains both magnitude (number) and directional information.
What is vector quantity?
The formula for dinitrogen tetroxide. (nitrogen symbol = N; oxygen symbol = O)
The speed of a boat that travels 20 miles in 2 hours would be ____________.
What is 5 mph.
The change in an object's velocity over time.
What is acceleration?
A chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light.
What is a combustion reaction?
A physical measurement that contains only magnitude (number) and does not contain directional information.
What is scalar quantity?
All combustion reactions will have_______________________gas as one of the reactants.
What is oxygen?
A student walks around the block, returning to her house. It took her 20 minutes to complete her walk, which covered a distance of 1/2 mile. Her total displacement is___________________________.
What is 0? Because the starting point and ending points are the same, the total displacement is 0 even though the student walked 1/2 mile in distance.
The ratio of the total distance traveled to the total time of the trip.
What is average speed?
Energy store in chemical bonds.
What is chemical energy?
The rate at which an object is moving at a given moment in time.
What is instantaneous speed?
The chemical formula for calcium bromide.
What is CaBr2?
The speed in miles per hour of a hawk that files 30 miles in 0.5 hours is_____________.
v=d divided by t
What is 60 mi/h?