解析 A。本题考查对实验现象的描述。把醋倒进小苏打里会产生很多气泡,a lot of bubbles 符合实验现象。B 选项 a little bubble 表示只有一点气泡,与实际不符;C 选项 no bubble 没有气泡,错误;D 选项 some bubbles 不如 a lot of bubbles 更准确地描述产生气泡的数量多。
Baking soda and vinegar are not just for the science fair – their volcanic reaction produces a powerful cleaning solution that can solve an array of drain problems. These two common household items are inexpensive, plus they do not contain the harmful chemical, sodium hydroxide, also known as ...
Are you seeking ways of cleaning your home without using toxic chemicals? Here's how you can clean with white vinegar and when to avoid it.
Vinegar can help remove any buildup on your clothes and leave them feeling soft and fresh. Another option is to use baking soda as a laundry booster. Just add half a cup of baking soda to your washing machine along with your regular detergent. Baking soda can help remove tough stains and...
20. Vinegar and Baking Soda Soil Test This is an easy way to test the pH of soil. Take a spoonful of garden soil and add vinegar to it. If it bubbles, then the soil is alkaline. If the soil does not make bubbles, then add a bit of distilled water, mix well, and then pour hal...
How do you get rid of green water pipes? Cleaning the bluish-greenish stains caused by corroding pipes is easy. Justmix vinegar and baking soda into a paste, apply to the stainsand wait about 10 minutes before wiping off. To prevent these stains, you'll want to have your water tested ...
Pro Tip:You can also check out ourguide to making your own antibacterial spray. We’ll teach you how to use isopropyl alcohol, vodka and vinegar to create a disinfectant at home. Now that we have busted those urban myths about bleach and pregnancy, you can allow your nesting instincts to...
Mix1/2 cup baking soda with 1/4 cup table saltand pour down the drain giving you trouble. Follow by pouring 1 cup of heated vinegar down the drain (it will foam and bubble). Cover the drain with a plug or duct tape to prevent the mixture from escaping. Let it sit for 15 minutes...
Then, begin to plunge up and down vigorously, about 15 to 20 times. This should do the trick, but if not, keep reading! Home remedy: Add one cup of baking soda to the toilet bowl. After the baking soda sinks to the bottom of the bowl, add two cups of white vinegar. Let it sit...
Use Vinegar And Baking Soda Baking soda and vinegar create a powerful cleaning combo that can handle de-clogging, cleaning, and deodorizing. While it might not be able to handle extremely stubborn clogs, it’ll usually do the trick for more minor clogs. They work great if you simply need ...