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process skills and chapter 7

observing the ability to identify properties, structures, etc. through use of all senses
predicting the ability to guess outcomes on basis of previous experiences
prediction a statement made about the future outcome of an experiment based on past experiences or observations
problem the statement of what needs to be solved
procedure an ordered series of all the steps followed to help answer a question
(experiment) purpose the statement of what you want to accomplish in an experiment to solve a problem. The reason for doing the experiment
qualitative data data that is based on observable characteristics of things or events that can be collected using the senses. Example: The juice tastes sweet to me.
quantitative data data that is based on measurable characteristics of things or events such as mass, volume, length, and quantity. Example: There is one liter of juice in the bottle.
questioning the ability to ask pertinent questions regarding experiences
recording ability to collect, record and tabulate data meaningfully
repeated trails experimental tests done more than once
replication repeated trails on more than one subject, as well as controls, in experimental tests
researching the ability to seek additional info, sources, conditions, personnel, events
(data) results a complete account of all data that was collected during the experiment (including charts, graphs, pictures, etc.)
science the study of nature and the physical world using the methods of science to find things out
scientist a person who "does" science and uses the methods of science
scientific law a generalized pattern in nature
scientific method a systemized testing of ideas, hypothesis, predictions and inferences about the natural world. A process used to try to solve a problem.
scientific theory a casual explanation for generalized patterns in nature that is supported by much scientific evidence based on data collected using scientific methods
variation slight differences among objects, organisms or events that are all of the same basic type
variable something that can affect a system being examined, and is therefore a factor that may change in an experiment
dependent variable a factor that responds to changes in other variables in an experiment. It is what will happen when to apply the independent variable. Example: (heat lamp), (ice cream melt rate)
independent variable a factor that can be changed or manipulated in an experiment by the scientist. It is what you are going to do to solve the problem.
(conclusion) generalizing the ability to sum up experiences into some kind of conclusion
hypothesis a testable statement of how a scientist thinks a problem can be solved; educated guess
identifying the ability to describe and interpret sensory and qualitative aspects of learning
interdisciplinary skills the ability to identify those areas of science which are interrelated to other disciplines such as math. English and Social Studies
interpreting the ability to analyze data validly (similarities, dissimilarities, cause/effect)
materials a list of all the items needed to conduct an experiment/investigation to see if the hypothesis is true
measuring the ability to find quantitative differences, to estimate, calculate, etc. (metric); to compare characteristics (such as mass, length, volume) with a standard (such as grams, meters, liters)
(procedure) methods an ordered series of stops followed to help answer a question
observation the data collected by using the senses to learn about objects and events
physical change a change in size, shape, or state of matter. (no new substances created?)
(water) solid ice- H2O
(water) liquid H2O- melting point- 32 degrees F
water vapor (gas) H2O- boiling point- 212 degrees F
solid matter with definite shape and definite volume. Molecules are tightly compacted- little room for movement
liquid matter with no definite shape but definite volume. Molecules have more room for movement- they flow
gas matter that has no definite volume and no definite shape. Molecules have the most room for movement. They have the most kinetic energy
mixture a physical change which is a combination of two or more substances that can be easily separated. Example: trail mix
solution a physical change that is a mixture of two or more substances involving a liquid. Normally a solvent and a solute can be easily separated. Example: saltwater
colloid a physical change where two or more substances, are combined and particles are evenly distributed. Example: milk
suspension a physical change that is a colloid where particles are not evenly distributed. Particles are generally larger.
if you add heat to matter, the atoms that make up the matter will begin to move... faster
type of matter that is most common in the universe... plasma
point at which a liquid changes into a gas... boiling point
number of states of matter... 4
when a gas cools down to a liquid... condensation
point at which a liquid turns into a solid... freezing point
point at which a solid turns to a liquid... melting point
type of change when you freeze water? physical
when a liquid reaches its boiling point and turns into a vapor... evaporation
sublimation when a solid transforms directly into a gas. Example: dry ice
matter in a gas state will_________ to fill its container expand
you can change the state of matter by adding or subtracting... heat
the particles in liquids _____________past each other. float
if you subtract heat from matter, the atoms that make up the matter will begin to move... slower
the particles in a solid state move around__________ point. fixed
the pull on the surface of liquids that allow liquids to form drops when they fall... surface tension
what happens in the process of evaporation? the liquid hits boiling point and turns the liquid to a gas. The gas goes into the atmosphere
why are changes in phase physical changes? the atomic structure is the same; its nly changing the way it looks
why is rust forming on a nail not a physical change? rust is a new substance that is created through a chemical change
why are most physical changes easy to recognize? there appearance has changed
Created by: katnissgirl714