Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
An overview of physical and chemical changes in matter, including definitions, examples, and methods for identifying them. Topics covered include pure substances, mixtures, and separation techniques such as distillation, filtration, and chromatography.
What you will learn
Typology: Schemes and Mind Maps
1 / 14
This page cannot be seen from the preview
Don't miss anything!
Example: Boiling water. Melting ice. Mixing sand and water. Tearing a piece of aluminum foil.
Physical change = a change in one or more physical properties. Does not change the composition of the substance. Does not create a new substance. Is easily reversed.
Example: Rusting Burning wood Cooking an egg
Chemical change = a change in the composition of the substance. A chemical change changes the substance into a different substance or substances.
Matter can be classified into two categories: Pure substances or mixtures. Review: What are the two characteristics of matter?
Has variable composition Example: Soda, steel, air Always has the same composition. Example: Pure water, aluminum, table salt.
A mixture is a type of matter that is made up of more than one kind of particle. It contains two or more pure substances. A pure substance is a type of matter that is made up of only one kind of particle.
Elements are pure substances that are only made up of one type of atom.
Element Compound Matter Mixture Pure substance
Homegeneous Heterogeneous Element Compound Matter Mixture Pure substance
We can separate mixtures using a variety of methods. Three ways we will talk about in class today are
a liquid. As the liquid passes through a filter, the solid particles get trapped. Example:
based on the affinity (attraction) of a substance to either a stationary phase or mobile phase. Example: Separating out ink on filter paper. http://www.youtube.com/watch?v=mLbdHPBC 2 I 4
