Matter Basics
What is matter?
Anything that has mass and takes up space.
What is a mixture?
Two or more substances combined that can be easily separated.
What tool do scientists use to look closely at tiny, microscopic objects?
A microscope.
What is a model in science?
Something scientists use to better explain something we can't directly see.
What is a property of matter?
A characteristic like color, size, shape, or texture.
What are the three main states of matter?
Solid, liquid, and gas.
What is a solution?
What do we call water when it's frozen?
Ice.
What are all substances made of?
Tiny particles called atoms or molecules.
Give one property that helps identify a liquid?
It take the shape of it's container and can be poured.
What happens to particles when matter is heated?
They move faster and spread apart.
Name one example of a mixture that is not a solution.
Salad, Trail Mix, Sand and Water, Oil and Water - other potential answers accepted.
What's it called when liquids convert into gas?
Evaporation.
Why can't we see the particles that make up matter?
Why do scientists test properties?
To identify substances or compare how they behave.
What happens to particles when matter cools?
They move slower and get closer together.
What do we call the part of a solution that gets dissolved?
The Solute.
What type of gas do humans breathe out that plants use?
Carbon Dioxide (CO2) - 1 carbon atom, 2 oxygen atoms.
In a particle model, how would you show a mixture?
With different types of particles mixed together but not chemically combined or connected.
What property helps you know whether something will sink or float?
Why do you think ice floats on water using what you know about matter? (Critical Thinking Question)
When water freezes, its particles spread out a little, making ice less dense than liquid water - so it floats.
Describe what happens to salt when it dissolves in water?
Water mixes with the salt and breaks it into tiny pieces that spread out evenly and are too small to see.
What's something you can't live without that's made of matter?
Potential answer(s): Air, Water, Food, Brain, Heart, Body, etc.
It can show sugar particles spreading evenly among water particles
How could you tell if two clear liquids are actually different substances?
Boil it, Freeze it, or test their density. If they differ, it's different substances.