SCIENCE 1121 ST - PART 1

scientific method

• investigative analysis
• study of materials containing carbon
• means by which a chemist solves an analytical problem

theory

• a possible solution that explains all the known facts
• study of chemical processes in living organisms
• a general principle or solution that explains or solves a problem

A theory that has become established without conflicting evidence is known as the (a)   .

experiment

• the degree of reproducibility of a measurement
• study of materials containing carbon
• an investigation based on controlled observations

hypothesis

• a theory that has become established without conflicting evidenc
• an investigation based on controlled observations
• a possible solution that explains all the known facts

measurement

• a possible solution that explains all the known facts
• means by which a chemist solves an analytical problem
• comparing an unknown quantity with a known fixed unit

mass

• all accurate figures plus one estimated last figure
• the only quantity in the metric system still measured against a physical standard
• the international standard of measurement for science

metric or SI

• a value that changes a measurement from one set of units to another
• comparing an unknown quantity with a known fixed unit
• the international standard of measurement for science

physical chemistry

• study of radioactivity and nuclear reactions
• a study of chemical processes and energy
• study of chemical processes in living organisms

specific gravity

• a value that changes a measurement from one set of units to another
• the ratio of the mass of a substance compared to the mass of an equal volume of pure water
• the only quantity in the metric system still measured against a physical standard