STAAR Chemistry Review Topic: Matter and its properties TEKS – The student knows the characteristics of matter and can analyze the relationships between chemical and physical changes and properties.

Student Expectation (4A) --differentiate between physical and chemical changes and properties.

Index Card Time Title: Changes Front: Physical Changes Back: Change in size, shape or state. Examples:

Physical Properties Malleable : Ability to be hammered into thin sheets Ductile: Ability to be drawn into a wire Luster: Ability to reflect the light

Index Card Time Title: Matter Changes Front: Chemical Changes Back: New substance forms. Color change. Temperature change (endo/exo). Gas forms. Precipitate (solid) forms.

5 Signs of a Chemical Reaction There are five indicators that a chemical reaction has taken place. They are… 1.Color change 2.Temp. change 3.Gas. 4.Appearance of a precipitate (solid) 5.Light.

Physical or Chemical properties? 1.rusting iron Answer: Chemical 2. dissolving in water Answer: Physical 3. burning a log Answer: Chemical 4. melting ice Answer: Physical 5. grinding spices Answer: Physical

Physical or Chemical Changes Precipitant All phases changes are physical

Student Expectation (4C) Compare solids, liquids, and gases in terms of compressibility, structure, shape and volume.

Index Card Time Title: States of Matter and Properties Back: Make a chart which includes solid, liquid and gas and the properties of shape, volume, compressibility and a diagram. ShapeVolumeCompressibility (high or low) Sketch a diagram Solid Liquid Gas

Compressibility and the spacing of particles. Particle vibrate in fixed position Constant random motion spaced far apart. Particles slide past one another

What happens to the gas particles in a balloon when it is compressed?

Student Expectation (4B) --- identify extensive and intensive properties.

Index Card Time Title: Intensive vs. Extensive Properties Front: INTENSIVE IS SO INTENSE THAT THE AMOUNT OF MATTER DOESN’T MATTER!!!!! Back: Examples of each

Intensive or Extensive? 1.Boiling point Answer: Intensive 2. Melting point Answer: Intensive 3. Color Answer: Intensive 4. Odor Answer: Intensive 5. Mass Answer: Extensive

Student Expectation (4D) Classify matter as pure substances or mixtures through investigation of their properties.

Index Card Time Title: Substances and Mixtures Back: Make the flow chart for classifying matter. Include examples for each category.

Flow chart

Element Pure and made up of only itself!!!! Pure

Compounds: Combining two or more elements together. Chemically combined. The same no matter where you find the compound. Pure!!!!

Mixtures Can be separated physically, not chemically combined. Homogeneous or Heterogeneous Made of several different types of atoms and element. Solution Homogeneous Salt Water solution Homogeneous Heterogeneous Mixture

Learning Check Identify if the following are 1) Homogeneous or 2) Heterogenous 1.__air 4. __ salad dressing 2.__ink5. __coffee (black) 3.__ soft drink 6. __Chicken noodle soup

Learning Check Identify if the following are 1) Homogeneous or 2) Heterogenous 1. 1 air 4. 2 salad dressing 2. 1 ink5. 1 coffee 3. 1soft drink6. 2 Chicken noodle soup

More Review

Pure Water

Pure Water ? 1.Homogeneous 2.Heterogeneous 3.Compound 4.Element

Chocolate Ice Cream

Chocolate Ice Cream – Hetero or Homo? 1.Neither, but it sure is good. 2.Heterogeneous 3.Homogeneous 4.Both

Vegetable Soup

Vegetable Soup: Hetero or Homo 1.Homogeneous 2.Neither, I don’t like soup. 3.Heterogeneous 4.Both

Tomato Soup

Tomato Soup: Hetero or Homo 1.Heterogeneous 2.Neither, still don’t like soup. 3.Homogeneous 4.Both

Salt (NaCl)

Table Salt: Element, Mixture, or Compound? 1.Element 2.Mixture 3.Compound 4.None of the above 5.All of the above

Banana Split

Banana Split: Hetero or Homo? 1.Homogeneous 2.Neither, too fattening. 3.Heterogeneous 4.Depends where you buy it.

Pure Gold

Pure Gold: Element, Mixture, or Compound? 1.Element 2.Mixture 3.Compound 4.All of the above

Mass is the measure of the amount of ____ in an object 1.Volume 2.Matter 3.Gravity 4.weight

A compound is a substance that is made from the atoms of 1.Only one element 2.Two elements only 3.Two or more elements

Extensive properties depend on the amount of matter present such as 1.Volume 2.Mass 3.Amount of energy in a substance 4.All of the above.

Intensive properties do not depend on the amount of matter present such as 1.Melting point and boiling point only 2.Volume 3.Density 4.Ability to conduct electricity 5.All but #2

Physical property can be observed such as 1.Density 2.Odor 3.Flammability 4.rusting

A substance that does not involve a change in the identity of the substance is called 1.Chemical change 2.Physical change

Phase changes are an example of 1.Physical change 2.Chemical change

This state of matter has definite volume and definite shape. 1.Liquid 2.Gas 3.Solid 4.plasma

This state of matter has the most energy. 1.Liquid 2.Gas 3.Solid 4.plasma

This state of matter has definite volume but no definite shape. 1.Liquid 2.Gas 3.Solid 4.plasma

How many different states can matter exist? Sometime but rarely 5

This state of matter is found on the stars and in fluorescent light bulbs. 1.Liquid 2.Gas 3.Solid 4.plasma

A mixture can be separated 1.Chemically 2.physically

Mixtures that are uniform in composition are 1.Heterogeneous 2.homogeneous

An example of an homogeneous mixture is 1.Chicken noodle soup 2.Lemonade 3.Salt water solution 4.Both #2 & #3

Granite is an example of what type of mixture? 1.Heterogeneous 2.homogeneous

An example of a pure substance is 1.A salad 2.Gold 3.Blood 4.Stainless steel