Precision: How close two or more measurements are to each other.
Accuracy: How close a measurement is to its standard or known values.
Bullseye
Compare and contrast accuracy and precision by defining them and giving examples.
100
1. Move decimal point over until there is only one non-zero digit to the left of the decimal point.
2. Add x10 and an exponent
What are the steps to convert a regular number to scientific notation?
100
Gases are compressible because there is a lot of free space between particles. In contrast, solids and gases are not easily compressible because there is little free space between particles.
Compare and contrast the compressibility of each state of matter.
100
True
True or false. Are changes in phases (e.g. melting, freezing, evaporation, condensation, sublimation, and deposition) physical changes.
200
C 25 ml cylinder graduated in 0.5 ml increments
Which of the following will allow measurement of a liquid’s volume with the greatest precision?
A 100 ml cylinder graduated in 2 ml increments
B 50 ml cylinder graduated in 1 ml increments
C 25 ml cylinder graduated in 0.5 ml increments
D 500 ml cylinder graduated in 25 ml increments
200
1. Move the decimal point that number of places to the right and fill in zeros as needed.
2. Delete the x 10 and exponent
How do you convert a number in scientific notation (with a positive exponent) to a regular number?
200
Solids not affected; retain a fixed shape.
Liquids affected; assume the shape of the part of the container which it occupies.
Gases affected; assume the shape of its container.
How is the shape of each state of matter affected by its container?
200
Extensive properties
Does extensive or intensive properties depend on size?
200
1. Change in Color
2. Precipitate forms
3. Bubbles
4. Light and/or Heat are given off
What are the 4 signs that a chemical change has occurred?
300
Your answer has to have the same number of digits past the decimal as the least precise measurement.
What is the rule when adding and subtracting significant figures?
300
Positive exponent
Would a large number have a positive or negative exponent when written in scientific notation?
300
The volume of a gas is affected by its container whereas the volume of a solid and a liquid is not. Solids and Liquids each have a definite volume.
Compare and contrast how the volume of each state is affected by its container.
What are 5 things you should simply recognize as chemical changes?
400
Your answer has to have the same amount of total significant figures as the least precise measurement.
What is the rule when multiplying and dividing significant figures?
400
Negative exponent
Would a small number have a positive or negative exponent when written in scientific notation?
400
The particles of solids and liquids are tightly packed whereas the particles of gases are far apart.
What is the structure of particles for each state of matter?
400
Ferromagnetic=able to become a magnet.
Ductile=able to be drawn out or stretched, esp. into a wire.
Malleable=able to be bent & flattened, esp into thin sheet.
Define ferromagnetic, ductile, and malleable.
400
(s)
(l)
(g)
(a)
What are the symbols for solid, liquid, gas, and aqueous?
500
1. Non-zero digits and zeros between non-zero digits are
always significant
2. Leading zeros are not significant
3. Zeros to the right of all non-zero digits are only significant
if a decimal point is shown.
What are the three rules for significant figures?
500
1. If negative exponent, move decimal point that many
places to the left and fill in zeros as needed.
2. Delete the x 10 and exponent
How do you convert a number in scientific notation (with a negative exponent) to a regular number?
500
Solid particles vibrate about a fixed position.
Liquid particles slide over one another.
Gas particles move freely.
What is the freedom of movement of particles of each state of matter?
500
MVL MEN
Mass, Volume, Length, Moles, Energy, and Number of particles.
What is the acronym for the only 6 extensive properties and what does each letter stand for?