Review Quizzes for Test Tomorrow

Chapter 7.1 Quiz

http://www.sciencesource.ca/quizzes/quiz_07_1BOmTe.htm

Chapter 7.2 Quiz

http://www.sciencesource.ca/quizzes/quiz_07_2b3Xn9.htm

Chapter 7 Quiz

http://wps.pearsoned.ca/ca_school_ontarioscience_7-8/102/26140/6692048.cw/content/index.html

Chapter Labeling Practice

http://www.sciencesource.ca/resources/gr7_matchquiz_ch07/

Chapter Matching Practice

http://www.sciencesource.ca/resources/gr7_matchquiz_ch07/

Answers to Pure Substances Worksheet

Pure Substances

1. A pure substance and a mixture could be confused because they are both homogeneous in appearance.

2. They are both the same because they are made of the same particles. Many factors can be tested but their results will always behave the same no matter where they come from.

3. b) Jewelry is not pure gold because pure gold is a very soft. The necklaces the can be bought at a store are a mixture of gold and something else to make it stronger (an alloy). Karats are a measure of the purity of the gold; 24 karats is the highest purity for jewelry.

4. If the shirt has a label with 100% cotton then this is not a pure substance because there cotton is a plant, not an atom or molecule. A shirt is made up of a variety of things including the dye in the shirt which also makes it a mixture.

Eureka videos viewed in class

Measuring Temperature





Molecules in Liquids

Grade 7 Chapter 7 Study guide

Chapter 7 Study Guide

Classes 7A, 7B, 7C, 7D have their test on Tuesday January 14th
Class 7E has their test on Wednesday January 15th

Key Terms

·         change of state

·         condensation

·         deposition

·         dissolve

·         evaporation (vaporization)

·         freezing (solidification)

·         gas

·         heat

·         heterogeneous

·         homogeneous

·         kinetic energy

·         liquid

·         matter

·         mechanical mixture

·         melting

·         mixture

·         particle

·         particle theory of matter

·         pure substance

·         solid

·         solidification

·         solution

·         sublimation

·         temperature

Please review the following:

1. Examples of pure substances and mixtures
2. The heterogeneous and homogeneous mixtures quiz
3. The pure substances worksheet in the package
4. The changes of state and the diagram
5. The 6 points of the particle theory of matter and the details about them
6. The difference between heat and temperature