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chemistry chapter 1
Terms in this set (37)
the science that seeks to understand what matter does by studying what atoms and molecules do.
everything around you is composed of....
tiny particles that compose all common matter
attachments that hole atoms together
the atoms are bound together to form several different types of...
an example of a chemical mixture is
characteristics of soda pop
-consists of sugar, water, and carbon dioxide
-sugar produces the sweetness
-fizzing results of the carbon dioxide and water
carbon dioxide molecules
consist of three atoms, one carbon and two oxygen
straight line of chemical bonds (linear)
carbon dioxide is held together by...
becomes a gas at room temperature
consists of two hydrogen and one oxygen
bent chemical bonds
water molecules are held together by..
becomes a liquid at room temperature
explain the process of molecules under pressure
-under pressure gaseous CO2 molecules are forced to remain mixed w water
-when opened, pressure is released
-CO2 escapes creating bubbles
virtually every is made up of...
explains the properties and behavior of chemicals by helping us understand the molecules that compose them
all things are made of atoms
Richard Feynman said....
the science that tries to understand how matter behaves by studying how atoms and molecules behave
a way of learning that emphasizes observation and experimentation to produce knowledge as the result of the senses
involve measuring or observing some aspect of nature
tentative interpretations of the observations
summarize the results of a large number of observations
models that explain and give the underlying causes for observations and laws
involves measurement or description of some aspect of the physical world
measure of the quantity of matter within it
Lavoisier measured the property of mass in the process of
Lavoisier and combustion process
measured mass of each container & contents before and after burning the substance inside, there was no change in the mass during combustion
means that further testing has the potential to prove it wrong
highly controlled observations designed to validate or invalidate hypotheses
-results may confirm a hypothesis or show it to be wrong
-hypothesis may have to be modified, discarded, or replaced
-new or revised hypothesis must be tested through further experimentation
a brief statement that synthesizes past observations and predicts futureones
the law of conservation of mass
in a chemical reaction matter is neither created nor destroyed
-provide a broader explanation for observations and laws
-models of the way nature is
-predict behavior beyond observations and laws
all matter is composed of small, indestructible particles called atoms
-went beyond laws and observations of the time
commitment, calculation, curiosity, & imagination
involves measurement as part of observation
-allows you to specify the difference precisely
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