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Gullett-Chem-Ch1

Chemistry-Ch1-Alchemy

TermDefinition
graduated cylinder tool with markings to measure volume
Erlenmeyer flask tool used to mix and/or hold solutions. Round glass container with wide base and narrow top.
beaker tool used to approximate volume, mix and/or hold solutions. Round glass with pour spout.
test tube tool used to mix and/or hold small volumes of solution for reactions or observation.
stiring rod long glass rod used for mixing solutions.
watch glass convex glass circle (looks like a lens) that is used to hold dry substances for observation.
funnel glass or plastic cone-shaped tool used with filter paper to filter precipitates from solutions
ring stand metal stand with a base, long rod used to hold various pieces of equipment above another surface or tool.
Bunsen burner tool that uses natural gas as fuel for a flame to heat substances
hot plate electric ceramic plate that is used to heat substances in glassware such as beakers
fume hood Special cabinet sized work space that, when turned on, will circulate air out of the work space to prevent exposure to harmful fumes and gases
physical properties properties of a material that can be determined without chemically altering the substance such as mass, density, melting and boiling points
chemical properties properties of a material that cannot be determined without chemcially altering the subtance such as flamibility, oxidation, response to acids
chemistry the study of matter - what substances are made of, how they behave, and how they can be transformed
matter any substance that has mass and volume
mass the amount of material in a given sample
volume the amount of space a given sample occupies
accuracy how close the measured value is to the true value
precision how close each measurement is to repeated measurements
significant figures rules in measurement that allow you to indicate the degree of certainty in measurements
density mass divided by volume. The amount of material packed into a given space.
intensive properties properties that do not change if the quantity of the substance changes, they can be used to idenify an unknown substance. Example: density
extensive properties properties that change based on the quantity of the substance, they cannot be used to identify an unknown substance. Examples: mass and volume
meniscus the point at which you read the volume of a liquid in a graduated cylinder - the bottom of the curve at the surface of the liquid
water displacement the method of determining the volume of an irregularly shaped object by submerging it in water and measuring the change of volume
Created by: lpgullett