Atoms and Molecules
Everything in the universe is made of this.
Atoms! Matter is also acceptable.
What are the 3 different states of matter?
solids, liquids, gas
What is one reason why scientists separate mixtures?
To save lives - Blood example and filtering water for people to have water to drink
What are properties?
They help us describe what is being observed of different objects.
What is the definition of an emulsifier?
an ingredient that makes unmixable liquids mix together
A desk and a sweater are both made of what?
Matter which is made of atoms.
Draw what the molecules in a liquid looks like?
Molecules are close together.
Explain what happened with the chromatography test.
The water caused the food coloring to separate showing one way a mixture can be separated.
What are 4 different properties of molecules that scientists focus on?
weight, shape, size, color
True or false:
Flour is a great emulsifier for water and oil.
FALSE
How many types of molecules is a substance made of?
A substance is only made up of one type of molecule! For example, water only has one type molecule.
Draw what the molecules in a gas looks like?
Molecules are bouncing around and far from one another.
Think back to how scientists used a filter to separate salt from water. What properties of the molecules did the scientists focus on?
They focused on the size!
I found an unlabeled container. It was small, crystalized shapes and tasted sweet. What could it be?
Sugar!
What is the best emulsifier for water and oil?
Licithin
Is milk a substance or a mixture? Explain.
Mixture, because it is made of more than one type of substance.
Draw what molecules look like in a solid.
Molecules are closely packed together and vibrating against each other.
What property did scientists focus on when they separated blood and plasma?
Weight/Thickness
Bob finds an unlabeled container. He see that its red, it has a thick and smooth texture. He tastes it and it has a sweet, tangy taste! What did he find?
Ketchup!
What is a type of emulsifier?
Licithin, flour, baking soda (name one is okay)
What are substances made up of?
Many different kinds of molecules!
What is the process of when a liquid turns into a gas called?
What is an example?
Evaporation
Water turning into steam
Explain what happened in the chromatography machine with the blood. What was happening, using at least 4 vocabulary words?
Answer can vary.
Jackie is helping her mom make cookies. Her mom tells her to get the flour. She looks in the cabinet and finds two unlabeled containers with white substances in it. She knows that flour molecules are not attracted to water molecules. What should she do to figure out which container has the flour?
She should conduct an investigation with water to see which one is not attracted to the water molecules.
Draw a model on the nanoscale level showing what it looks like when you add an emulsifier into water and oil.
Drawing should have a key. It should show the emulsifier "gluing" the oil and water molecules together.