Here is what we may keep in mind.The materials of a product are usually our first focus. What is it made of? Are there any harmful chemicals in it? Green products are made of more natural materials which are fre
Are there any harmful chemicals in it? Green products are made of more natural materials which are free from harmful chemicals, so they can be goo d for our physical health.Packaging is important. How is a product packaged? Is it over packaged? We' d better choose glass, metal an d ...
WhichTWOproblems affecting organisms in the splash zone are mentioned? A. lack of water B. strong winds C. lack of food D. high temperatures E. large waves 查看解析: Questions 29 and 30 ChooseTWOletters,A-E. WhichTWOreasons for possible error will they include in their report?
What chemicals contains a carbon carbon double bond? What chemical element is Og? What chemical elements are in pizza? What element is graphene made from? What is the chemical element bromine? What elements are radioactive and synthetic? What chemical element is W? Which chemical element is des...
There are a few differences between salt water and traditionally chlorinated pools. Some of the differences are the chemicals used to maintain the pool and the type of maintenance. A traditional pool uses chlorine tablets, sticks, or granules. “The active ingredient in 3” tablets, 1” tablets...
Here is what we may keep in mind.The materials of a product are usually our first focus (关注). What is it made of? Are there any harmful chemicals in it? Green products are made of more natural materials which are free from harmful chemicals, so they can be good for our physical ...
In your own words, how would you define chemistry? What are "chemicals" and what do "chemists" do? What is the chemical make up of salt? Which of the following substances would oxidize C6H4(OH)2(aq)? A. Ag+(aq) B. Cu(2+)(aq) C. Ag(s) D. Cu(s) ...
Green food is free of agricultural chemicals and pollution, which is perhaps the most important reason for customers to recognise green food as a reliable choice. Furthermore, with the development of society, people's living standards have impr...
Bitumen is removed from deeply buried oil sands by drilling wells - a process known as "in-situ recovery." Several wells are drilled down into the oil sand. Then steam and chemicals are pumped down one well. The hot steam and chemicals soften the bitumen, reduce its viscosity, and flush ...
a. salt b. heat c. temperature d. cold In chemistry, what certain glass objects are not meant to be heated and could shatter if exposed to a heat source? Give two examples of heat-sensitive glassware. What type of energy, kinetic or potential, is contained in chemicals? What aspect of...