25/26 Unit 1: Nature of Science

Weigh Boat

• Used to weigh or transfer chemicals (usually dry).

• A container for holding liquids during experiments.

• A tool for measuring temperature in a lab.

• A device for mixing solutions.

Control group

• Used for comparison. This group does not get any manipulations by the experimenter.

• This group receives the full treatment and is observed for changes.

• This group is used to test the effectiveness of a new drug.

• This group is monitored but does not participate in the experiment.

Meter stick

• Measures length of objects.

• Measures weight of objects.

• Measures temperature of objects.

• Measures volume of objects.

Erlenmeyer Flask

• Glassware with a wide base and a short vertical neck that allows contents to be mixed by swirling.

• A cylindrical container used for measuring liquids accurately.

• A flat-bottomed dish used for culturing microorganisms.

• A tall, narrow container used for holding and pouring liquids.

Scoopula

• Used for transferring dry chemicals.

• Used for measuring liquid volumes.

• Used for heating substances.

• Used for stirring solutions.

Claim

• A statement or conclusion that answers a question or proposes a solution to a problem.

• A type of evidence used to support an argument.

• A personal opinion that is not based on facts.

• A question posed to gather information.

Experiment

• A scientific procedure to test a hypothesis.

• A method to collect data without any testing.

• A way to analyze past scientific results.

• A process of making random guesses.

Constant

• Factors that change in an experiment

• Factors that must remain the same in both groups

• Factors that are only relevant to the control group

• Factors that are only relevant to the experimental group

Trial

• A single attempt of an experiment.

• Round in which an experiment is repeated at least three times.

• The final outcome of an experiment.

• A method to analyze data.

Digital Balance

• Used to determine an object’s mass.

• Used to measure the volume of liquids.

• Used to calculate the density of solids.

• Used to assess the temperature of objects.