Matter Notes

75 %
25 %
Information about Matter Notes
Education

Published on July 1, 2008

Author: bjolley

Source: authorstream.com

Matter Notes : Matter Notes These will be available online. Atoms are too small to be seen so how do we know about them? : Atoms are too small to be seen so how do we know about them? Observations are made during experiments and then we infer things about atoms based on our observations. Atoms combine to make molecules : Atoms combine to make molecules Molecules are made up of two or more atoms. How and why has our model changed? : How and why has our model changed? How? It has changed from being the same throughout to being made of smaller charged particles to having a nucleus. Why? We’ve done more experiments with better technology and learned new things. Current model of the atom : Current model of the atom Protons (+) Neutrons (neutral) Electrons (-) What are the limitations of our model of the atom? : What are the limitations of our model of the atom? The electrons are really far away from the nucleus. If the nucleus were the size of an orange, the electrons would be as far away as the size of the school. The movement of the electrons is not in specific paths. Density : Density How do we find the mass of an object? Scale – (Triple beam balance) How do we find the volume of an object? If it is a rectangular solid Length ∙ width ∙ height If it is irregularly shaped use displacement Use a graduated cylinder and see how high the water moves up when the object is put in. You can tell by observation which object is more dense : You can tell by observation which object is more dense The less dense substance will float and the more dense substance will sink. Examples: Warm air rises because it is less dense. Warm water rises because it is less dense. Ocean in a bottle – denatured alcohol sinks and paint thinner floats. Eggs float in salt water but not fresh water because salt water is more dense. Examples : Examples Warm water rises What evidence do we have that particles of matter are in motion? : What evidence do we have that particles of matter are in motion? Air freshener spreads out to every part of a room. Vanilla escapes from a balloon. Food coloring spreads out in water. Temperature affects how fast particles of matter are moving : Temperature affects how fast particles of matter are moving When particles are heated up they will speed up and spread apart and become less dense. When particles are cooled down they will slow down and get closer and become more dense. Examples : Examples http://www.miamisci.org/af/sln/phases/index.html Substances expand when they heat up and contract when they cool down. : Substances expand when they heat up and contract when they cool down. Cracks in the sidewalk are made so that they can expand in the hot summer sun and not crack. The liquid in a thermometer expands and moves up when it heats up.

Add a comment

Related presentations

Related pages

"General Chemistry Online - Companion Notes: Matter"

Learning Objectives A checklist of concepts to learn and skills to master in this section. Lecture Slides Lecture Notes Links Internet sites and paper ...
Read more

States of Matter Purdue - Purdue University

States of Matter. Gases, liquids and solids are all made up of microscopic particles, but the behaviors of these particles differ in the three phases.
Read more

Properties of matter notes - Austin Peay State University

Properties of Matter Slide 1 Gases Particles very far apart with almost no attractive interparticle forces. This gives them no shape or definite volume.
Read more

Matter

Matter Made, our in-house furniture and lighting brand, has debuted its 2016 collection at the International Contemporary Furniture Fair in New York.
Read more

Matter Notes - s3.amazonaws.com

Matter Notes What is Chemistry? Chemistry is the study of matter: - its composition, structure, and properties - the processes it undergoes, and
Read more

Chem4Kids.com: Matter

Chem4Kids.com! This tutorial introduces basics of matter. Other sections include elements, the periodic table, reactions, and biochemistry.
Read more

State of matter - Wikipedia

In physics, a state of matter is one of the distinct forms that matter takes on. ... Phase (matter) Supercooling; Superheating; Notes and references
Read more

Matter and Energy Notes - scribd.com

Matter and Energy Notes - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
Read more

SparkNotes: SAT Chemistry: The States of Matter

You might wonder why there are different states of matter at all. After all, molecules only bond together in one way, right? The answer lies in the type of ...
Read more