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# Nine Week Study Guide - PowerPoint PPT Presentation

Nine Week Study Guide. Definitions. Hypothesis- An educated guess to a scientific problem. I.V.- The variable that changes in an experiment. D.V.- The variable that is being tested or measured in an experiment. Definitions.

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### Nine Week Study Guide

• Hypothesis- An educated guess to a scientific problem.

• I.V.- The variable that changes in an experiment.

• D.V.- The variable that is being tested or measured in an experiment.

• Control Group- The group in an experiment that is treated normally. EX: Giving a plant water versus giving a plant Dr. Pepper.

• Experimental group- The group in an experiment that is being experimented on.

Ex: Giving a plant Dr. Pepper versus giving it water.

• Constant- Things in an experiment that remains the same between the control group and experimental group.

• Control- Factors in an experiment that the Independent Variable compares to.

• Title: Answers can vary; The effects of Starbucks Coffee on Cancer Tumors.

• Hypothesis: Starbucks Coffee does or does not reduce the size of cancer tumors.

• I.V.- Starbucks Coffee

• D.V.- Size of the Tumor

• Constants: Amount of days(6 Months) , X-ray

• Title: The effects of Breakfast on Thinking Ability

• Hypothesis: Breakfast does and does not play an important role in one’s ability to think.

• I.V.- Not having breakfast

• D.V.- How well you are able to process information (thinking ability).

• Constants- SAT-10, Same Instructor.

• Matter is anything that has mass and takes up space.

• Mass is measured in grams using a Triple Beam Balance.

• Milk Spoiling- C

• Silver Tarnishing- C

• Ice Melting- P

• Evaporation- P

• Leaf changes color- P

• Water purified through distillation- P

• Density= Mass/ Volume

• Mass Divided By Volume

• 52g /73.5ml = 0.707= 0.71g/ml

• Concrete- M; Hetero.

• Wood- M; Hetero.

• Table Salt- P.S

• Milk- M; Homo.

• Sodium- P.S.

• Pure Air- M;Homo.

• Blood- M; Hetero

• Soil- M; Hetero.

• Paint- M; Hetero

• Oxygen- P.S.

• Nail Polish- M; Hetero

• Gases have an indefinite shape and an indefinite volume.

• Liquids have an indefinite shape and a definite volume.

• Solid particles stay in place.

• Liquid particles move/slide past each other.

• Condensation is the change in state from a gas to a liquid.

• Evaporation is the change in state from a liquid to a gas.

• Gases are Non-Metals

• Air- M

• Light- NM

• Sugar- M

• Water Vapor- M

• The rate of the reaction increases as time increases.

• B

• A

• A