Mystery 1 & 2
What two substances did we mix together to make our pennies look shiny and new?
1.Vinegar
2.Salt
What is an example of a acetic acid and an example of a citric acid?
acetic acid:vinegar
citric acid:lemon juice
What are the ingredients to make goo?
2borax
What two substances did we use yesterday?
Vinegar and baking soda.
What is the name of this unit?
Every team write you answer on your white board. Don't let other teams see. Every team who get this answer correct will receive 100 points!
Chemical Magic
What were the alchemist main goal?
To become rich,by creating gold.
What happened when we mixed the purple liquid with the vinegar?
It changed color (pink).
Name one substance that is created from a chemical reaction.
Some possible answers:
rubber, windows (glass), plastic, powder for fireworks, and many more.
______________ is a substance in a state that allows it to expand freely and fill the whole container.
Gas
What is one new vocab word you learned in this unit and what is the definition?
Answers will vary!
When the pennies became shiny, what happened:
a.The dull layer was removed.
b.A shiny layer was added.
c.A change to the penny occurred.
Why are some acids used in food?
Because they taste sour and are safe to eat.
What two substances mixed together create rubber?
1. an acid
2.Latex sap
What caused our bag to expand or pop ?
The build up of gas/pressure, until a mini explosion occurred.
What was your favorite Mystery and why? Come to a decision as a group!
Answers will vary!
What happened when we put a steel nail into a bag with vinegar and pennies?
The copper particles that were removed from the pennies formed on the nail, causing it to look like it became a copper nail.
A(n)______________occurs when two or more substances are mixed together and result in a new substance.
Chemical reaction
What is left over after vinegar dissolves metal? What is that substance used for today?
A1-a white powder
A2-fireworks
Are explosions always used to explode things? Why or why not?
No. answers will vary
Each Mystery always had a question we were answering? Can you remember one question?
Mystery 1-Are magic potions real?
Mystery 2-Could you transform something worthless into gold?
Mystery 3-What would happen if you drank a glass of acid?
Mystery 4-What do fireworks, rubber and silly putty all have in common?
Mystery 5-Why do some things explode?
Why couldn't we see the copper particles in the vinegar?
Because the copper particles broke down into very small (too small to see) particles in the vinegar.
What are the four properties of an acid?
1. Taste sour
2.Disslove metal
3. They are reactive.
4.Burn to the touch (or in cuts)
In mystery 3 we mixed together many different substances. Here is a list of all of them:vinegar, baking soda, borax, glue, and milk. What was one example of two substances where a reaction occurred? What was the reaction?
Possible answers:
milk and vinegar-maybe a little curdling
baking soda and vinegar-fizzed
borax and glue-lumpy and gooey
What causes an explosion?
The build up of gas, until the pressure causes an explosion.
When we did the penny experiment what caused the pennies to turn green?
oxidation