(Chapter 2) What is the Formula for Density? - Density= mass of a substance/volume of a substance
(Chapter 2) What is the Specific Gravity Formula? - SG= density of sample/density of water
(Chapter 3) Pure Substances - A pure substance is classified as:
- a type of matter with a fixed or definite composition
- an element that is composed of one type of atom
- a compound that is composed of two or more elements always combined in the same proportion
(Chapter 3) Mixtures - A mixture is a type of matter that consists of:
- two or more substances that are physically mixed but not chemically combined
- two or more substances in different proportions
- substances that can be separated by physical methods
(Chapter 3) Differences between Homogeneous and Heterogeneous Mixtures? - Homogeneous:
The composition is uniform throughout
- the different parts of the mixture are not visible
Heterogeneous:
- the composition varies from one part of the mixture to another
- the different parts of the mixture are visible
(Chapter 3) Chemistry Link to Health: Scuba Breathing Mixtures - Breathing mixtures for scuba are
homogeneous mixtures
Some examples are:
- Nitrox (oxygen and nitrogen gases)
- Heliox (oxygen and helium gases)
, - Trimix (oxygen, helium, and nitrogen gases)
(Chapter 3) Define Solid and their properties? - Solid:
- a definite shape
- a definite volume
- particles that are close together in a fixed arrangement
- particles that move very slowly
Define Liquid and their properties? - - an indefinite shape but a definite volume
- the same shape as their container
- particles that are close together but mobile
- particles that move slowly
Define Gas and their properties? - - an indefinite shape and indefinite volume
- the same shape and volume as their container
- particles that are far apart/particles that move very fast
Define Physical Change and Physical Properties? - Physical Properties:
- are characteristics observed or measured without changing the identity of a substance
- include shape, physical state, boiling and freezing points, density and color of substance
Physical Change:
- a change in the state
- a change in the physical shape
- no change in the identity and composition of the substance
Define Chemical Change and Chemical Properties? - Chemical Properties:
- describe the ability of a substance
- to interact with other substances
- to change into a new substance
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
