Studied by 1 personindependent variable
a variable (often denoted by x ) Which is changed by the experimenter.
dependent variable
a variable (often denoted by y ) whose value depends on that of another variable.
control variable
a factor in an experiment that remains constant
Scatter Plot Graph
A graph of plotted points that show the relationship between two sets of data that do not depend on each other where the line is not connected. (Ex. height versus weight)
Bar Graph (Histogram)
compares values across categories
alchemy
medieval chemical philosophy based on changing metal into gold; a seemingly magical power or process of transmutation
transmutation
the conversion of an atom of one element to an atom of another element
copper
Cu 29
Silver
Ag 47
Gold
Au 79
zinc
Zn 30
Brass
An alloy of copper and zinc.
alloy
A mixture of two or more metals
tin
Sn 50
bronze
an alloy of copper and tin
ore
Rock that contains a metal or useful mineral.
Smelting
The process by which ore is melted to separate the useful metal from other elements.
iron
Fe 26
steel
an alloy of iron and carbon
alkali metals
Group 1
alkaline earth metals
Group 2
transition metals
Group 3-12 elements
Post Transition Metals
the metals on the left side of the staircase. Not very reactive.
Metaloids
(semiconductors) are the elements that have the properties of both metals and nonmetals
noble gasses
unreactive gasses
reactive nonmetals
halogens and others
Lanthanoids
Elements 57-71
Actinoids
Elements 89-103
family on periodic table
sections of elements with similar properties
group on periodic table
vertical columns with similar propities
periods on periodic table
A horizontal row of elements in the periodic table
periodic
describes something that occurs or repeats at regular intervals
atomic number
the number of protons in the nucleus of an atom the top whole number on the ptable
atomic mass
the average weight of an element (protons + neutrons) the bottom number on the ptable
precipitate
a solid that forms and settles out of a liquid mixture
Oxidation
A chemical change in which a substance combines with oxygen, rust or tarnish inside of handwarmers
Luster
the way a metal refelcts light (shiny)
malleable
flexible; can be shaped
molar mass
the mass in grams of one mole of a substance
mole
unit used to measure the amount of a substance
gram
unit of mass
AMU
atomic mass unit
exothermic reaction
A reaction that releases energy in the form of heat
inside of handwarmers
graduated cylinder
used to measure the volume of a liquid
Beaker
used to hold solids or liquids, not used for measuring
erlenmeyer flask
used to hold liquids, has narrow neck to prevent splashes
Distilled water
water that has been purified by distilation
sample jar
stores solids or liquids
test tube
open tube used to hold liquid
dropper bottle
used to dispense small amount of liquid
electronic balance (scale)
used to measure mass (weight)
weighing dish
holds solids while weighing
bunsen burner
used to heat substances with natural gasses
crucible tongs
used to pick up and hold hot items
hotplate
used for heating with electricity
watch glass
Used as a cover for beakers
funnel
a device used for pouring a liquid into a narrow opening etc.
filter paper
special paper used to separate solids from liquids
test tube rack
Holds test tubes
mortar and pestle
to grind chemicals to a powder
crucible
a dish used to cook chemicals by fire
ring stand and ring
Holds items over flame for a long period of time or filtering
ceramic triangle
A triangular shaped device that can be placed on an iron ring to hold a crucible
well plate
a flat plate with multiple "wells" used as small test tubes
Note 
Flashcard (76)