创意小实验 -火山喷发 How to make a Volcano
教妈妈如何做实验英文作文
教妈妈如何做实验英文作文
英文：
As a mom, it can be challenging to come up with fun and educational science experiments for your kids. However, with a little creativity and some basic materials, you can easily conduct experiments at home. Here are a few tips to help you get started:
1. Choose simple and safe experiments: Look for experiments that use household items and are safe for kids to do. For example, you can try making a volcano using baking soda and vinegar, or create a rainbow with a glass of water and a flashlight.
2. Set up a designated experiment area: Find a space in your home where you can set up a small table or desk for conducting experiments. This will help keep everything organized and make it easier for your kids to focus on the task at hand.
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How to make a Volcano
Materials:
10 ml of dish soap
100 ml of cold water
400 ml of white vinegar
Food coloring
Baking soda slurry (fill a cup about ½ with baking soda, then fill the rest of the way with water)
Empty 2 liter soda bottle
Instructions:
NOTE: This should be done outside due to the mess.
Combine the vinegar, water, dish soap and 2 drops of food coloring into the empty soda bottle.
Use a spoon to mix the baking soda slurry until it is all a liquid.
Eruption time! … Pour the baking soda slurry into the soda bottle quickly and step back!
How it Works:
A chemical reaction between vinegar and baking soda creates a gas called carbon dioxide. Carbon dioxide is the same type of gas used to make the carbonation in sodas. What happens if you shake up a soda? The gas gets very excited and tries to spread out. There is not enough room in the bottle for the gas to spread out so it leaves through the opening very quickly, causing an eruption!
Extra Experiments:
1. Does the amount of vinegar change the eruption?
2. Does the amount of water change the eruption?
3. Does the amount of baking soda
change the eruption?
Materials:
An Orange or Clementine
1/2 Teaspoon Baking Soda
Instructions:
Cut the orange into slices or peel separate into sections
Dip a slice or section into the baking soda
Take a bite! As you chew, it should start to bubble in your mouth
How does it work?
When acids and bases mix, you get some exciting chemistry! Oranges and other citrus fruits are filled with citric acid. It is a saf e acid, and it’s what gives oranges, lemons, and limes their sourness. Baking soda is a base, the opposite of an acid. It’s also safe, but doesn’t taste very good on it’s own, and will give you a tummy ache if you eat a lot of it. As the citric acid and baking soda mix, it makes millions of carbon dioxide bubbles, the same gas you breathe out, and the same one that makes soda so fizzy.