關於Chemical的意思和用法的提問

A: He probably means a romantic attraction.

A: may need the complete sentence to know but taking a guess here

the "otherwise" may denote a contradiction to a clause or sentence before the statement (contradicts what the chemical (or initial form of the chemical) did like saved lives/or nothing harmful but usually it kills people)

sample:
Luckily, the gas broke down into pure oxygen and carbon instead of carbon monoxide, a gas that would otherwise kill them.

A: sort of. I've never used this phrase before, so I think it means that it prevents your brain from being able to produce the right chemicals that trigger happiness.

A: 新しい化学物質の通知

A: It's not a common phrase... it sounds like a drug.

Is there a sentence?

A: Example: Don't touch that acid; it's a dangerous chemical!

A: "Do not add (Chemical), it can cause a negitive reaction!"
"Add (Chemical) to the mixture."
"How many grams of (Chemical) needs to go into the mixture?"
These are what I can come up with at the moment.

A: The first means the toxic chemicals are already in the thing. It's bad, but the process has gone as far as it's going to go. No more are being added.

The second means there are toxic chemicals in the thing, and more are being added; the toxic chemicals are still going into the thing.

A:

chemistry is a topic is being talked about. It is like talking about sth such as: Psychology. Engineering, marketing, anatomy, and vice versa.

Chemical is used as a name of a substance and as an adjective as I’ve explained.

A: A compound is any combination of two or more things — you can have a compound word, like bookcase, or a compound fracture, which is a bone broken into many pieces.

A chemical compound is a combination of two or more elements — carbon dioxide is a chemical compound because it is composed of one carbon molecule and two oxygen molecules.

A: "Is" represents something that is happening now in the present and may not be complete yet. The correct use for this sentence would be:
"This chemical can help reassemble the protective DNA, the telomere, that the Chromosome is losing." (lost is past tense and would require has)

"has" represents something that happened in the past and is completed.
"This chemical can help reassemble the protective DNA, the telomere, that the Chromosome has lost."

A: Usually pesticides are specifically used to kill insects and agricultural chemicals could mean and other product- like soil enrichment, sunburn treatments, or animal deterrents.

A: confirming chemical analysis

A: It would either be called a decolorant or just bleach for hair. Which would sound like this..

A: 請到提問詳情頁確認

A: I think "mosquito repellent" is not correct. Mosquito repellent only repels mosquitos, does not usually kill them.
A word for "pest-killer" is "Pesticides". For example, "The farmer sprayed pesticides over his plants to kill any bugs trying to eat his crops."
A word for "insect-killer" is "insecticides".

A: It depends - you could do either depending on situation. Most people don’t see chemical symbols “in daily life” :)

A: It depends on class and teacher, but they can do experiments related to chemistry

A: There are several good explanations online. Here is one:

https://dictionary.cambridge.org/grammar/british-grammar/about-adjectives-and-adverbs/adjectives-order

Don't be alarmed by the possibility of 10 or 15 adjectives, that would be very unusual. You will rarely see more than 3 together.

We are never taught this order at school (in fact I didn't know it until I started learning Japanese!). Somehow everyone uses the same order.

A: I believe that we usually say "blood-brain barrier", instead, though.

A: Or "as a sales rep(resentative)" or "in sales".

Both of those might be more common in US English, though I'm not entirely sure. Everything I learnt about being "in sales", I learnt from American TV shows. =P