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What is an Atom?
A tiny piece of matter that is too small to see.
What is matter?
The stuff that things are made of.
What are molecules?
A group of atoms joined together in a particular way.
Name three models that we have done in class?
Pasta Model, Models of different kinds of molecules from the book MADE OF MATTER, and Fan Model.
What is the chapter question?
Why did the food coloring separate into different dyes?
Color, Smell, Texture
Define properties of molecules?
Shape, Size, Weight
biggest to smallest: 1 water molecule, 1,000,000 water molecules, 1 drop of water, 1 atom, 1 glass of water
1 glass of water, 1 drop of water, 1,000,000 water molecules, 1 water molecule, and 1 atom
What is the unit question?
What happens when two substances are mixed together?
What is a nanoscale?
It is the scale of particles like atoms and molecules.
Draw a diagram that you read about and explain your diagram? (Ocean water, Blood, Ancient food, chromatography test)
Separating pure water from salty water, Centrifuge, and Gas Chromatography
What did you enjoy most about this chapter?
All answers are correct.
Define inference and observation?
Inferences are conclusions that we can draw from what is known and observable.
Observations: Uses five senses.
Write three sentences on the whiteboard using science words(Like atoms, properties, mixture, etc). Each sentence needs to have two science words in it.
Correct
Based on the fan model, what objects moved the farthest? And what did each object represent?
Red ball and Foam Peanut. Molecules.
What are three things that a diagram needs to have in order to be a clear diagram?
Labels, Keys, and Arrows.
What were the three models that we learn today? If you can not name all three name at least 2.
Color Changing Model, Growing Model, and Attraction Model.
Based on the chromatography test, What was the text mixture, medium, and solvent?
Mixture: Food Coloring
Medium: Paper
Solvent: Water
Based on the chromatography test, Why do some dyes travel farther than others?
The food coloring is separated into different dyes because the molecules in the dyes have different properties
Trick Question...
Free points
Who took the first picture of an atom?
David Nadlinger.
When does a molecule react?
A reaction occurs when two or more molecules interact.
Explain the Chromatography test
●The food coloring is separated into different dyes because the molecules in the dyes have different properties
●The blue dye moved the farthest, the yellow dye was in the middle, and the red dye moved the least.
●blue dye was light/small/not attracted to the paper.
●yellow dye was medium weight/somewhat attracted to the paper/medium size.
●molecules of the red dye were heavy/large/attracted to the paper.
List three natural mixtures. Then list three mixtures made by people.
Mixtures by people: Paint, Juices, Shampoo, ect
Draw a simple diagram by using these words: Substance, Atoms, Molecule, Mixture.
Atoms--> Molecule--> Substance--> Mixture