Chemistry Review. Matter What are the 3 states of matter? SOLID, LIQUID, GAS Animation.

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Presentation transcript:

Chemistry Review

Matter What are the 3 states of matter? SOLID, LIQUID, GAS Animation

Physical & Chemical Characteristics PHYSICALCHEMICAL Changes its appearance physically Changes what it is made up of (changes the atoms to make a new thing); reacts

Properties What is a property? Describes, talks about it’s ability to… Can be physical or chemical Has it CHANGED yet?.... NO Does it describe it/have ability to change?

Examples of Properties Front Desk: PHYSICAL PROPERTIESCHEMICAL PROPERTIES

Changes When it actually changes Physical: changes size, shape, but its still the same thing Chemical: changes what it completely is, chemical reactions

Examples of changes Tearing paper Burning paper Breaking wood Campfire Mixing kool aid Cooking a cake Physical change Chemical change

Property vs. Change Property = description or could change in the future Change = change 5 evidences of a chemical change PCOGT – “Pirates can obtain great treasures” – Precipitate (solid forms) – Color change – Odor(smell) – Gas forms – Temperature change – Evidence of a chemical change Evidence of a chemical change –

Property or Change? Boiling point 2 different liquids mix  bubbles Food coloring in water Burning an egg It has a yellow color It produced a smell Property Change

Which of the following is an example of a chemical property of water? – A. Boils at 100 C – B. Is transparent – C. Has no odor – D. Reacts with calcium Is it still water (H2O) Transparent = see through/clear No smell Reacts = chemical reaction

Which of the following is an example of a physical property of hydrogen? It A. Is less dense than air B. Reacts with oxygen C. Is highly flammable D. Forms hydrochloric acid PHYSICAL PROPERTY

Don’t freak out Take your time Use tools Read the entire question Look at the graphs and tables