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General Matter
SI Units
Density
Problem Solving
Lab & Safety
100
The value of this can change with the location of the object in the universe.
What is weight?
100
The SI unit for mass.
What is kilogram
100
The formula for calculating density.
What is mass / volume?
100
The curved line at the top of a liquid in a graduated cylinder that is used to make an accurate measurement.
What is a meniscus?
100
This metal was dissoloved with hydrochloric acid (HCl) in our chem/phys changes lab.
What is magnesium?
200
Burning a candle is an example of this kind of change. **BONUS: Give 2 reasons!
What is a chemical change? wick changes to ash, gas is produced
200
The metric prefix in front of meter that is approximately the length of a football field. 1 ____meter = length of football field
What is hecto.
200
Finding the displacement of water of an irregularly shaped object.
What is how to find volume (of an irregularly shaped object).
200
Convert (show your steps): 3.2 lbs. = ___ g *Put your answer in scientific notation
What is 1.45 x 10^3 g
200
A cloudy solution that forms from 2 clear liquids mixed together is called a ___ and indicates a ___ change.
What is precipitation and chemical?
300
A measure of the size of a body in a 3-dimensional space.
What is volume?
300
The ratio that is used to convert from one unit to another.
What is a conversion unit or conversion factor?
300
Doing this to the volume of a 100g bag of feathers so that it has the same density as a 100g brick.
What is decreasing the volume of the bag of feathers?
300
Find the number of minutes in 1 century. Put your answer in scientific notation. **Use 1 year = 365.25 days
What is 5.25 x 10^7 minutes
300
In this step of the procedure, both a chemical change and a physical change took place.
What is putting NaCl in water (it dissolves) and then adding silver nitrate (a precipitate forms)?
400
This state of matter is the only state that can change its volume.
What is gas?
400
Since 1 cubic cm = 1 mL, then 1 L = __ cubic cm.
What is 1000?
400
When liquids of different densities combine, those with larger densities ___ and those with smaller densities ___.
What is sink and float?
400
The density (in g per cubic cm) of a block of lead with dimensions 2.0 dm x 8.0 cm x 35 mm and a mass of 6.356 kg. *SCI NOTATION
What is 1.135x10 g/cm^3 *Put volumes in cm: 2dm = 20cm 35mm = 3.5 cm *convert kg into g: 6.356kg = 6356g To find D: 6356g / (20cm)(8cm)(3.5cm) = 11.35 g/cm^3
400
The proper method for getting chemicals in a test tube without spillage.
What is tip the test tube so that it is around the scoopula, keeping the scoopula level, then dump the chemical in.
500
Two properties that all matter has.
What is mass and volume?
500
Which is longer: 1583 cm or 0.0179 km
What is 0.0179 km?
500
A golden egg is stolen and the thieves, thinking that the egg is made of 24 kt gold, try to sell it to a local merchant. The merchant, however, claims that the egg is really only 14 kt gold. This is how the dispute was settled.
What is find the density of the egg and compare that number with the known value for the density of 24 kt gold?
500
The number of beans in 6.8 g of beans if 5 beans have a mass of 2.1 g. *Answer to the nearest whole number
What is 16 beans
500
The 4 signs we witnessed in lab that indicate a chemical change has occurred.
What is color change, production of gas, production of precipitate, and energy (either heat or light) exchange.