introduction to chemistry Flashcards
the substance that have a consistant composition and unique properites
chemicals
the components that don’t have an effect on you.
It might seem like they are unnecessary, but they are included in medication
inactive ingredient
ingredient that does not dissolve easily
like sodium fluoride
and other things in toothpaste
active ingredient
why does some ingredient have a vague name or fragrance ?
to protect the ownership of this product
what is the first step to do to test something?
1-must be careful
2-observation and systematic detailed expermintation
Why do we study chemistry ?
Cause chemistry related to different sort of knowledge and everywhere
Chemistry
Is the study of matter its physical and chemical properties
Anything that has mass and occupies space
matter
Examples of matter :
Air,body,planet earth,universe
All matter change involve ________
energy
A systematic approach to the discovery of new information
The scientific method :
the systematic recording of quantative and quatitative
observation
The description of, for example, the color, taste, or odor of a substance is a result of observation
ملاحظة
the possible explaination of a proplem at hand based on collected information
hypothesis
simply an attempt to explain an observation
hi pa th s sis
the scientific process of testing a hypothesis in controlled systamatic way
experimentation
Demonstrating the correctness of hypotheses and theories is at the heart of the scientific method
ix pir min teh shn
the possible explaination of the reasoning from the experiment which is consistent with experimental result
A theory
hypothesis supported by extensive testing
thee re
the ory
