Chemical vs Physical Change
Digesting a cracker
Chemical change
The amount of matter in an object.
Mass
Stored energy between atoms
bonds
In engineering design, something that limits the solution to a problem.
Constraint
What is Mr. Fouts' wife's last name?
Fouts
When you dissolve a drink powder into water. It changes color but when you leave it to dry you end up with a powder
Physical change
What are the two components of a chemical equation?
The reactants and the products
What happens to the energy during and exothermic reaction? What happens to the energy in an endothermic reaction?
It is released in an exothermic reaction and it is absorbed during an endothermic reaction
In engineering design, the goals and desired features of the solution.
Criteria
What sport did Mr Fouts compete in before becoming a teacher?
MMA fighting
When high octane fuel is burned. Is this a chemical or physical change
Chemical Change
The principle that mass is neither created nor destroyed during a chemical reaction
Conservation of mass
What are the 3 ways energy is released in an exothermic reaction?
Light energy, thermal energy, sound energy
What is a desirable outcome given up to gain another desirable outcome?
A Trade-Off
What are the names of our fish?
Apollo, Planet Destroyer, Cupcake
What is the difference between a physical change and a chemical change
Physical is usually reversible and no new substance is created. Chemical is usually irreversible and a new substance is formed
What happens to atoms and molecules in a chemical reaction?
Molecules are broken apart, then atoms are rearranged to form new molecules.
When you need more energy to create more bonds in the products than is found in the reactants, what kind of reaction occurs?
An endothermic reaction
What is an engineer?
Someone who uses science to build products that solve practical problems.
What species of fish do we have in the classroom?
Ranchu Goldfish
What are the 5 signs of a chemical reaction
odor change, unexpected color change, effervescence, endo/exothermic, precipitate formation
A scientist mixes together two chemicals that have a total mass of 18 grams in an unsealed beaker. Then, effervescence occurs and the color changes. The final mass is 16 grams. If mass can't be destroyed, how do you explain this?
The scientist was using an open system. The mass was not destroyed. It just escaped the system.
When you have extra energy from the reactants that you do not need to create the products. What kind of reaction occurs?
Exothermic reaction
What are the 7 steps in the engineering design process?
Identify the problem, brainstorm, design, build, test and evaluate, redesign, share solution
The animal that Mr. Fouts has tattooed on his right calf
King Cobra