Mystery 1
What is a mixture
What happened to the weight of the penny after it was removed from the vinegar salt solution?
It was less than it was before
________________ were a group of people in ancient times who mixed different substances to create a reaction.
Alchemists
What is a chemical reaction?
When 2 substances react
True/False: Explosions are always dangerous
False
_____________ is one of the most valuable material in the world
Gold
Why does the weight change for the penny in the vinegar/salt solution?
The rust breaks apart and falls off the penny. The rust pieces have weight to them.
Given enough time, vinegar ________________ metal
dissolves
What do we use powders that cause different colored flames for?
Fireworks
True/False: Explosions are always used to destroy things
False
If you mix salt and water you get a
Solution
If you combine oil and water you get a
Mixture
sour
If you mix acid with the sap of a South American tree (latex) you get ___________________
rubber
Explosions are caused when ____ is produced
gas
A solution is an example of a
Physical Change
What happens when you combine water, borax, and glue? Be specific.
A chemical reaction occurs. A new substance, slime is created
Name 4 acids - be specific
Answers will vary
What do fireworks, rubber and Silly Putty have in common?
they were all created by a chemical reaction - also accidents
Explain what happened when we put baking soda and vinegar in a bottle? Why did this happen.
The 2 substances reacted. Gas was produced and the balloon expanded.
Describe the chemical reaction: Fire
heat, light, gas and ash are produced. There is also a color change.
Describe the chemical reaction: Baking soda and vinegar
Carbon dioxide is produced. Bubbling occurs.
Is salt in the salt water solution a solute or a solvent?
Solute
What form can matter come in?
Solid, liquid, gas
What did we prove through our evaporation experiment?
That a physical change took place and that you can separate solutions.