An exploration of Kitchen chemistry By Hannah Jean Ward Scientific question My question was What happens when kitchen chemicals get mixed together My dad helped me pick out the chemicals ID: 284648
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Slide1
Chemical Mixing:An exploration of Kitchen chemistry
By: Hannah Jean WardSlide2
Scientific question:
My question was
:
“What happens when kitchen chemicals get mixed together?”
(My dad helped me pick out the chemicals.)
My hypothesis was
:
“It will cause a chemical reaction.”
“It will bubble and explode!”
“The chemicals will mix and form something new.”
“Different things will happen if you mix different chemicals.”Slide3
What is a kitchen chemical?
Hannah:
“Chemicals can be many different things. Little kids should
not
mix things without a grown up.”
What kitchen chemicals did we look at? We used: Water Olive oil Red wine vinegar Sea salt Baking soda Slide4
What did we do?
What should we mix them in? How should we mix them? How much stuff should we mix up?
A
glass – so we can use a small amount, so we can
observe it
because it’s clear We should use a spoon. Mix them for 10s. A couple spoonfuls will do.What should we observe?What are they like before they are mixed – how they feel, their color, whether they are liquid or solid, if and how they smell.Does anything happen when we mix them?What does the mixed-up stuff look like?Slide5
How did these kitchen chemicals start out?
Chemical
Solid or Liquid
Feel
Smell
Color
Other observations
Water
Liquid
Smooth, slippery
Like nothing
Clear
Some tiny air bubblesRed Wine VinegarLiquid
Very wet, smooth and slipperySour
RedOlive oil
Liquid
Smooth, slippery, and greasy
Like something, kinda like olives
Yellow-ish green
Thicker than other liquids
Sea
Salt
Solid
Chunky, hard, not sticky
Like nothing
White
Little bit clear
Baking Soda
Solid
Soft, chunky
Like nothing
WhiteSlide6
So what happened?
Mixture
Observations during mixing
Observations of final mixture
Water and vinegar
Nothing really
Smells like vinegar, still clear, mixed well, pink-ish in color, no changes
Water and oil
Nothing really
Smells like the oil, oil stayed on top, greenish on top, didn’t mix well
Water and baking soda
Turned white
Still some stuck to spoon, more dough-like, baking soda on the bottom, mostly stayed separateWater and salt
NothingDon’t mix well, salt turned clearVinegar and baking soda
“A chemical reaction!”, turned brown and white, it bubbled and fizzed. “Almost fizzed all over the place!”Brown, some slimy paste at bottom, bubbles mostly gone
Vinegar and oil
Nothing really.
Tasted it and felt sick, really harsh. Didn’t mix well. Smells like vinegar.
Vinegar and salt
Nothing really. The salt stayed on the bottom.
Red, but the salt stayed white. Smells like vinegar
Oil and salt
Nothing really.
Yellow with a bunch of crystals. Didn’t mix very well.
Oil and baking soda
Became pasty.
Yellowish-white, can’t see through it anymore. Smells like oil. Still a liquid.
Salt and baking soda
Nothing really.
It camouflaged the salt in the baking soda, can’t see it anymore. Smooth with hard bumps…salt.Slide7
Some of the more interesting mixtures:
Baking soda and red wine vinegar
Olive oil and red wine vinegar
Olive oil and baking soda
Different things happen!Slide8
What did we learn?
That baking soda and vinegar cause a chemical reaction! It bubbled but did not explode. (whew!)
Some things mixed well, but some things did not. In some cases the mix ended up different than the starting stuff.
You need to be careful when you mix things because you never know what’s going to happen.
The End!