Vocabulary #1
What is the smallest form of matter that we have talked about?
atoms
Some types of matter are not made up of molecules.
False - everything is made of matter which is made of molecules.
If a substance is soluble - that means....
it can dissolve in water or another liquid.
A group of students created a model that was tightly packed together. What was formed? a solid, liquid or gas
What is a science "adjective" called?
a property
What means to mix a solid evenly into a liquid by breaking down into smaller pieces to small to see?
Dissolve
All liquids can EVENLY mix with other liquids.
False
Which item would have to be observed at the nanoscale? eyelashes, molecules, pebbles, or grains of sugar
molecules
A mixture is made up of ______________ molecules.
different
If something dissolves - it is said to be what?
soluble
What can you add to a mixture that won't mix to help it bond together?
an emulsifier
When the molecules of a solid aren't attracted to the molecules of a liquid, they stay clustered together as a solid.
True
Pepper and cumin will leave these pieces in any liquid. We don't want them in our salad dressing.
sediments
Stirring a mixture of a solid and liquid can help the solid ______________.
dissolve
If two molecules connect - what do you call that in science?
attraction
What is the universal liquid (solvent)?
Sugar and salt dissolve in water.
True
Students are using the fan model in the classroom. What are they trying to test about molecules?
They are trying to test out which items have the most density or stick to something else.
When is an emulsifier not needed?
An emulsifier is not needed when the molecules attract to one another.
Atoms and molecules form different ______________.
substances
What is the name of the model that was used to separate the ink? What did that model show with the colors?
chromatography - it showed the density of the different colors
A scientist only tests an experiment one time. Why?
False - scientists test experiments more than once to try to gain more evidence.
Is oil more or less dense than water. How do you know?
Less dense because it floats to the top of a liquid solution.
In the molecule SIM - molecule #5 was mostly likely _______. Why?
Oil - because it would not attract to anything without an emulsifier.
evidence