Summative Test #1 Flashcards
- is a symbolic expression of a compound or substance.
- It is also described as shorthand of expressing the types and the number of atoms in a substance.
Chemical Formula
Two Types of Formulas
- Molecular formulas
- Empirical formulas
- Shows the exact number of atoms of each element in the smallest
unit of a substance.
Molecular Formula
- It tells us which elements are present and the simplest whole number ratio of their atom.
Empirical Formula
C3H8O3
Glycerol (Glycerin)
NaCI
Salt (Sodium Chloride)
NaCIO
Chlorox
a.NH3
Ammonia
NaHCO3
Baking Powder
-is the final good that is
bought by individuals or
households for personal
use.
-are goods that are bought for
consumption by the
average consumer.
Consumer Product
*Product Name
*Manufacturer’s Information (Name, Address, Contact)
*Ingredients (for food, cosmetics, etc.)
*Net Weight or Volume
*Batch or Lot Number
*Expiry Date or Best Before Date
*Usage Instructions
*Safety Warnings (if applicable)
*Country of Origin
*Barcodes (if used)
*Regulatory Symbols and Certifications
*Additional Information (nutrition, dosage, care, etc.)
*Language Requirements
*Graphic Design and Layout (clear and legible)
DTI required labels for a product
It is the process of separating the
insoluble solid from the liquid
substance by allowing the liquid to
pass through a porous material called filtering agent
Filtration
-observable characteristics, traits or qualities of matter.
Properties of Matter
-without changing the composition of a substance
-has two types: extensive, intensive
-ex. phase, color, solubility, density, melting/boiling points, volatility, viscosity, conductivity
Physical Properties
-with an accompanying change in the chemical composition of a substance
-ex. flammability, chemical reactivity
Chemical Properties
separates the liquid layer known as supernatant and a heavy insoluble solid known as precipitate by allowing the said solid to settle at the bottom of the container then the liquid above the solid is poured off carefully into another container.
Decantation
-involves forceps, sieves, magnets, and other similar tools to separate the components of mixtures
-sand and gravel are separated by passing the mixture over a wire screen
Mechanical Separation
-evaporation and condensation of a liquid solvent from a mixture or solution
-uses the difference in boiling points of the components of a mixture
distillation
-uses the difference in the degrees to which substances are absorbed on the surface of an inert substance such as a filter paper
chromatography
chemical decomposition or breakdown produced by passing an electric current through a liquid or solution containing ions.
electrolysis
uses a motor device known as a centrifuge that speeds up the settling of the precipitate using centrifugal or rotating motion
centrifugation
-derived from the greek words isos and topos which means “the same place”
-variants of an element are still found in the same location in the periodic table of elements
-british chemist frederick soddy
isotopes
