Matter
What are the three states of matter?
Solids, liquids, and gases
What is the most crucial indicator that a chemical reaction has taken place?
The formation of a new substance.
What is the definition of properties?
A characteristic or quality of something that helps identify it.
What were the reactants in the bath bomb's chemical reaction?
water, citric acid, and baking soda
What is an example of a physical change?
Optional answer: Ice melting into water, water evaporating into water vapor, etc.
In a closed system, what happens to the mass when changes occur to the matter inside it?
The mass stays the same.
What is an open system? What happens to the mass?
An area where matter can get in or out. The mass can change.
What are three examples of how you can test properties?
boiling point, melting point, state of matter at room temperature, flammability, density, solubility, freezing point
What was the product in the bath bomb's chemical reaction?
carbon dioxide
Which process shows a chemical change and which one shows a physical change?
Process A
Before the change: water, liquid, non-flammable
After the change: Water, gas, non-flammable
Process B
Before the change: water, liquid, non-flammable
After the change: hydrogen and oxygen, gases, highly-flammable
Process A represents and physical change.
Process B represents and chemical change.
In an open system, what happens to the mass of a substance?
The mass can change because matter can get in or out.
I am an area where matter cannot escape and the mass cannot change regardless of any new substances forming. What am I?
Closed system
What is the difference between solubility and insolubility?
If something is soluble, it can dissolve (mix evenly) in liquid.
If atoms do not get destroyed or created during a chemical reaction, what happens to them?
They simply rearrange into new molecules.
Definition: The amount of matter in a given space
Density
Particles are made up of _________ and __________. What is the difference between the two?
Atoms and molecules. The difference is that atoms are by themselves and molecules are two or more atoms chemically combined.
If I'm a gas and my density is 1.6 and I am surrounded by gases with a density of 1.7, where am I going?
Floating upwards lol
Why did we use fire to test the bath bomb gas's density?
To provide us with a visual representation of where the gas was going.
What do the particles do in a physical change?
The atoms stay together in their molecules, but the molecules change formation by spreading apart or moving closer together.
Which of the following models best demonstrates the law of conservation of matter?
Model A
How do the particles rearrange in a chemical reaction? Be specific with your vocabulary.
In a chemical reaction, the molecules that make up the old substance can be broken apart, and the atoms that make them up can be rearranged into new molecules to make a new substance.
Provide three examples (related phenomenons) where a CHEMICAL REACTION occurs:
Can be options like elephant toothpaste, vinegar and baking soda, coke and mentos, really anything that causes a NEW substance to occur.
Describe the density and flammability of the bath bomb gas.
It was not flammable and it was more dense than room air.
What are the atoms that make up the molecules of our bath bomb reactants?
Oxygen, Hydrogen, Carbon, and Sodium
Identify which order these three sentences should be in for it to complete a CER:
Question: Was the bath bomb gas new matter?
1) All matter has mass and it can not be created or destroyed.
2) The bath bomb gas was a new substance, not new matter.
3) In the closed system bottle experiment, the mass did not increase after the gas had appeared.
C) The bath bomb gas was a new substance, not new matter.
E) In the closed system bottle experiment, the mass did not increase after the gas had appeared.
R) All matter has mass and it can not be created or destroyed.