What is the median of the following numbers?
5 5 6 6 6 7 7 11 11 12 12 12 13 14
9
100
Define matter
Define mass; how is it measured
matter is the stuff that makes up everything in the universe
mass is a measure of how much matter is in an object; it is measured in kg or g
100
The shape of a solid is __________________
The volume of a solid is _____________
The particles ______________
definite
definite
vibrate back and forth
100
What is an element and where can you find information about it?
a substance that cannot be broken down into other substances by chemical or physical means
the periodic table
100
What is an atom?
The smallest part of an element
200
True or false:
a box and whisker plot show how the values in a data set are distributed or spread out.
True
200
What are the four changes in states of matter?
melting
freezing
vaporization
condensation
200
The shape of a liquid is _______________
The volume of a liquid is ______________
The particles ___________
indefinite
definite
move around each other
200
What is a compound?
a substance made of 2 or more elements chemically combined
200
What is a compound?
A substance made of two or more elements chemically combined
300
What are the 5 terms seen in a set of data for a box and whisker plot?
Least value
Lower quartile
Median
Upper quartile
Greatest value
300
What is a physical change?
Give 2 examples
a change in a substance that does not change its identity
crushing a soda can
tearing paper
crumpling aluminum foil
300
The shape of a gas is ___________
The volume of a gas is __________
The particles _________
indefinite
indefinite
move quickly
300
What is a solution?
Give an example of a solution.
a very well-mixed mixture
sea water
300
What is the density of water?
Explain sinking and floating
1.0 g/mL
400
What is another word for mean (used in mathematics)?
What is the mean of 5, 3, 6, 9, 2?
Average
5
400
What is a chemical change?
Give 2 examples
a change in which one or more substances combine or break apart to form new substances
wood to ashes
heating sugar to caramel
400
What is density?
What is the formula to find density?
What units are used to measure density?
the measurement of how much mass of a substance is contained in a given volume
D = M/V
g/cm3 g/mL
400
What is a mixture?
Give an example of a mixture.
two or more substances that are mixed together but not chemically combined; in a mixture the individual substances keep their separate properties
orange juice
400
What is in the nucleus of an atom?
protons and neutrons
500
How do you set up a frequency table with intervals?
Break up the data into groups, for example:
1 - 4, 5 - 8, 9 - 11, 12 - 15
Then the data is put into the group: for example 3 would go in the 1 - 4 group and 14 would go into the 12 - 15 group.
500
What is sublimation?
give an example
the change in state from a solid directly to a gas without passing through the liquid state
dry ice
500
Name the parts of an atom
Name the charges of each part of an atom
electrons, protons, neutrons, nucleus, electron shell
negative, positive, neutral
500
What is a molecule?
a combination of two or more atoms
500
Here is an element:
70
Yb
Ytterbium
173.04
What is the Atomic #, Atomic Mass, # of electrons, protons and neutrons
70 Atomic #
173.04 or 173 Atomic Mass
70 electrons
70 protons
103 neutrons