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chem lab midterm

chem lab 100

QuestionAnswer
Volume equation final - initial
Definition of density the amount of matter contained in a specific sized sample of that substance
Density equation mass/ volume
Different substances have _______ densities. The density of a given substance will always be the _______. different; same
Definition of mass the amount of matter contained in a sample of a substance
mass is always measured in? grams or a derivative of grams, (mg), (kg)
Definition of volume the size of a sample of a substance
Volume is always measured in? mL or a derivative such as L
1 mL is equal to what? 1 cubic cm 1 mL= 1 cm^3
Equation for volume of a solid (cm^3 or mL) length(cm) x width(cm) x height(cm)
What is a graduated cylinder? a piece of glassware designed to measure volumes of a liquid
The curved surface of a liquid in a graduated cylinder is called what? meniscus
Definition of solubility the amount of a substance that can be dissolved in a specific amount of solvent
The degree of solubility of a substance in water depends on what? temperature of the water and the chemical properties of the substance
Sand is ___________ in water. completely insoluble
Benzoic acid is_________ in water. slightly soluble
NaCl is __________ even in cold water. quite soluble
Definition of decantation a process of separating a solid residue (precipitate) from a liquid by gently pouring off the liquid without disturbing the solid that has settled to the bottom
Definition of filtration a process of separating a solid from a liquid by using a filter through which the liquid, but not the solid, can pass
Vacuum filtration suction may be used to draw the liquid through the filter
How does the temperature affect the solubility of salt in water? solubility increases w temperature
Definition of tared "zero-ed" on the weighing table
NaCl is more soluble at _______ temperatures that at _______ temperatures. high; low
Sand is _________ in water at any temperature. nonsoluble
What is the name of the piece of equipment used for vacuum filtration? Buchner funnel
Benzoic acid dissolves in _______ water and creates crystals in _______ water. hot; cold
Created by: yulissalira
 

 



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