Concentration and Reaction Rates - Science Theater 10

Making Elephant Toothpaste is as simple as mixing two chemicals - causing an explosion of foamy science goodness. We take a look at two reactions with hydrogen peroxide to see how the concentration of H2O2 affects the rate of the reaction.

Category:

Education

Tags:

• chemistry
• reaction
• chemical
• rate
• hydrogen
• peroxide
• elephant
• toothpaste
• science
• demo

[daSkaterkiDgirl]

WHAT DOES CONCENTRATION MEANS? I SEARCHED IT UP AND IT MAKES NO SENSE.

[sciencetheater]

@daSkaterkiDgirl It is how much of something you put in a liquid. LOTS of sugar in a little bit of water is a HIGH concentration. Just a SMALL amount of sugar in LOTS of water is a LOW concentration.

[xoxosahar]

question: how do you dispose hcl and sodium thiosulfate? can you pour them down the drain?

[sciencetheater]

@xoxosahar Check with local authorities. It often depends on concentrations, etc... (for example, HCl can be neutralized to become water and a salt...) Also look up the safety information available from whoever sold you the chemicals. Most companies now have handy databases to help with disposal issues.

[ji89412]

what is the difference of how much and the concentration of the substance?

[sciencetheater]

@ji89412 Think of making frozen orange juice. When it is in the can, it is a certain amount of orange. When you put it in a pitcher and add water, it is still the same amount of orange, there is just more water there, too. So the Concentration of orange changed, not how much orange is present.

[2bhat]

so epic!

[SugarCrazedInsomniac]

getting high on oxygen i see XD

[mumujk]

Cool! 2:57

[minorballer]

i can see one of caspers enemy in da last experiment 3:13 to 3:24