What is a way of learning about the natural world through observation logical thinking
Science
Various organize methods of investigating problems and answering questions
Scientific inquiry
The study of matter and energy and the changes that matter and energy Undergo
physical science
Posting questions, making observations and inferences, developing hypothesis, and conducting experiments
Skills used by scientist
The facts and information you learned from observations
Data
Logical thinking about observations or prior knowledge
Inference
A possible explanation for Observation that relate to a scientific question. It must be testable by observation or experimentation
Hypothesis
In every experiment you must have what two variables
Manipulated and responding variables
The variable that the scientist changes also called the independent variable
Manipulated variable
The variable that changes because of the manipulated variable also called dependent variable
Responding variable
An investigation we're all variables except one remains the same
Controlled experiment
Includes measurements or numbers
Quantitive data
Includes descriptions (color, odor, sound)
Qualitative data
A statement that describes what scientist expect to happen every time under a set of conditions
Scientific law
Oh well tested idea that explains and connect a wide range of observations
Scientific theory
Makes up everything in the universe
Matter
The study of the properties of matter and how matter changes
chemistry
A substance that cannot be broken down into any other substance
Element
What is a substance made of two or more elements that have been chemically combined in a specific ratio
A compound
Combinations of symbols that show the ratio of elements in a compound
Formula
A substance that is made of two or more substances, elements or compounds that are not chemically combined
Mixture
A change that alters the form or appearance of a material but does not change the material into a new substance
Physical change
A change that produces a new substance
chemical change
The measures of the force of gravity on an object
weight
The measure of the amount of matter an object contains. This never changes with gravity
Mass
System scientist use to measure the properties of matter
International system of units (SI)
The amount of space that matter occupies, S I unit is leader (L)
Volume
The measure of the amount of mass that is contained in a given volume
Density
Density equals
Mass over volume
1.0 g/mL
Waters density
Who Call the smallest piece of matter that could not be divided a "Adams
Democritus
Smallest particle of matter
atom
Stated that atoms cannot be broken down into smaller pieces, in any element all the atoms are alike, atoms in different elements are different, atoms of two or more elements can be combine to form compounds, atoms of each element have a unique mass, the mass of the element in a compound are always in a constant ratio.
Dalton's six conclusions about atoms
Used today to see Adams
Scanning tunneling microscope
The force that holds atoms together
Chemical bond
A combination of two or more atoms bonded together
molecule
Gold can be separated from other materials by means of
Panning
Rock containing a metal or other useful material
Ore
Must take place to obtain an element from its compound
A chemical reaction
One method to break down compounds. An electric current is used to break the chemical bond
Electrolysis
Metal strip to use to carry the electrons during electrolysis
Electrodes
Often used to separate iron from it ore
Blast furnace