It Keeps Changing
The process of liquid changing to a solid is called
Freezing
To separate items like chex mix what method would you use?
Hand sorting
If gas is cooled, what can it change to?
A liquid
What is a solvent
The substance that dissolves that solute
Give an example of chemical change with gardening
Rust on a garden tool
What can a gas change into when it is cooled?
A liquid
Gas changing to a liquid is called
Condensation
To separate a metal from something else, what method would you use?
Magnetic attraction
Heterogenous
What is a solute
The substance that is being dissolved
Why do pastry chefs need to understand chemical change?
So they know what will happen when they combine certain ingredients
So they bake for the right amount of time and at the right temperature
Talk about the law of conservation of matter in relation to creating and destroying matter.
You cannot create or destroy matter. Only God can.
When you ice starts melting what point do we say it has reached?
Melting point
Concentrate
What is the mixture where two or more substances are spread EVENLY THROUGHOUT
Homogenous mixture
What is a homogeneous mixture in which two or more substances are spread evenly throughout?
A solution
Give three evidences of chemical change
Change in color
Change is state of matter
Change in odor
Talk about the law of conservation of matter in relation to changing form.
Matter can change form
Freezing point
Define "saturated"
A solution that is holding all the solute that a solvent can dissolve
How are solutions and homogenous mixtures related?
They are individual substances that are spread out evenly. A solution is homogeneous.
Say 3 ways to increase the rate of dissolving a mixture
Increase the surface area (crush, crumble, cut)
Increase movement (stir)
Increase temperature (heat)
How is a burning log in a firepit an example of chemical change and conservation of matter?
The wood gives off a distinct odor
The mass of the ashes & soot plus the mass of the gases in the air equals the mass of the original piece of wood. (It doesn't create something new)
How can an understanding of chemical change be beneficial in relation to odor?
The change in odor is an evidence of chemical change. If you smell a bad odor on food, you wouldn't want to consume it.
Define "Physical Change"
A change in matter that does not form a new substance
What is an alloy?
A solid solution made of two or more elements, including at least one metal.
Give 3 examples of a Heterogenous mixture
Define "mixture"
Two or more substances that are PHYSICALLY combined and that DO NOT form a new substance
Tell 3 facts about a chemical change
Happens when the atoms in an element/compound are rearranged to form NEW SUBSTANCES
Elements or compounds to lose their individual properties
Two or more pure substances change into a new substance
How does the law of conservation of matter support what the Bible teaches about the origin of matter
Matter cannot be created or destroyed; it can only change form. God created all matter out of nothing. People can change matter, but not create or destroy matter. Only God can do that.