Chapter 7 Test Study Guide

Here is the study guide for your upcoming Chapter 7 Test on Friday February 5th, 2016

1. Classifying mixtures: 
1. pure substances and mixtures
2. heterogeneous mixtures (mechanical mixtures) and homogeneous mixtures (solutions)
3. Provide examples of these substances
2. Review the 6 points of the particle theory of matter
3. Review the behaviour of particles in solids liquids and gases
4. Review the 6 changes of state and the diagram in the package; review which changes of state require energy and which require energy to be removed to occur
5. Understand how and why substances change state according the the particle theory
6. Review the difference between heat and temperature

Key Terms

• Matter
• Pure Substance
• Solid, liquid, gas
• Mixture
• Homogeneous
• Heterogeneous
• Homogeneous mixture (Solution)
• Heterogeneous mixture (Mechanical mixture
• The particle theory of matter
• Temperature
• Heat
• Change of state
• Evaporation 
• Boiling
• Condensation
• Melting
• Solidification (freezing)
• Sublimation
• Deposition

Changes of State Videos Viewed in Class

Changes of State

Three States of Matter Notes

SOLID

• Solids have very low kinetic energy (the energy of movement)
• The particles vibrate in place
• Solids have a definite shape and volume (they cannot be compressed)
• The particles are very close together
• The particle attraction is very strong

LIQUID

• Liquids have high kinetic energy
• The particles are able to move past each other
• Liquids take the shape of the container they are in (they do not have a definite shape)
• Liquids have a definite volume (they cannot be compressed into a smaller space)
• There are spaces between the particles
• The particles have low particle attraction

GAS

• Gases have very high kinetic energy
• Gas particles move freely
• The particles fill the space they are in (they do not have a definite shape or volume)
• Gases CAN be compressed into smaller spaces
• There are very large spaces between the particles
• The particles have very low particle attraction

*** Kinetic energy increases as you move from SOLIDS to GASES

*** Particle attraction decreases as you move from SOLIDS to GASES

States of Matter Animations

http://web.visionlearning.com/custom/chemistry/animations/CHE1.1-an-threestates.shtml

Particle Theory Video Viewed in Class

Classifying Materials Worksheet Answers

Material	Heterogeneous or homogeneous	Reason
Honey	Homogeneous	If there are no bubbles, all parts of the honey look the same
Yogurt with fruit	Heterogeneous	We see the yogurt and the fruit separately
Marshmallow	Heterogeneous	The inside is sticky and the outside is dry and powdery
Raisin bread	Heterogeneous	There are raisins and the bread which can be easily identified
Orange juice with pulp	Heterogeneous	We can see solid pulp and liquid orange juice
Vanilla ice cream	Homogeneous	All parts of the vanilla ice cream look the same
Concrete sidewalk	Heterogeneous	Contains many different small rocks
Plastic cup	Homogeneous or heterogeneous	Depending on the cup, there may be different colours or textures
Ketchup	Heterogeneous	The liquid portion separates from the solid portion
Sand	Heterogeneous	Sand is made up of crushed rocks or different colours and materials