3 rules that can identify chemical reactions

Answers

Answer 1

Answer:

1)colour change

2) fizzing or bubbling

3)odour change

Explanation:

you can also say temp change, formation of a precipitate or smoke being formed but those are the main 3 i know


Related Questions

What items are used to identify the genetic makeup of an unknown organism?

Answers

Answer:

Polymerase chain reaction machine

Primers

Petri dishes

Test tubes

Pipettes

DNA Polymerase

Free nucleotides

The organism to be identified

Explanation:

To identify the genetic makeup of an unknown organism, the nucleotide sequences fond in the Deoxyribonucleotide (DNA) of a known organism is matched to the DNA of some known organisms. If there is a certain degree of sameness in most of the matched parts, then the unknown organism can be said to be related to the known organism. This is a comparative study.

To carry out this identification, items used include; primers, the PCR machine, test tubes, DNA polymerase, free nucleotides, etc.

Passive immunity provides more rapid protection then does active immunity true or false

Answers

Answer:

true

This is the major advantage to passive immunity; protection is immediate, whereas active immunity takes time (usually several weeks) to develop.

hope this helps:))

I believe it’s true

Tom walked into your office and said he'd been looking forward to talking with you. He said, "I've been feeling really good lately, really good...powerful, strong." Tom, a 54-year old man, was smiling and a bit wide-eyed as he began the conversation. "I'm feeling a real sense of purpose, like I was put here to help people," he said. Tom got further into his recent revelations, going so far as to say he felt "like Jesus Christ, in a way." Tom stood up with excitement as he continued to escalate emotionally and with his gestures. At no point was he threatening, but he was far more animated than ever before. As the conversation progressed, Tom told you that he was thinking about you and how powerful you were, too. He said you were like Thor with his hammer and that the two of you could really do good in the world. Then, giggling and gleeful, he admitted that he was thinking that he actually was Jesus Christ and that he wanted you and your powerful hammer to help him save humanity from those who were trying to control him.

What might you do or say next?

What are your diagnostic impressions of Tom?

Answers

Answer:

I dont really understand what you want me to do??

Explanation:

what is the main point of the villi

Answers

Answer:

The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions. The villi number about 10 to 40 per square millimetre (6,000 to 25,000 per square inch) of tissue.

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

C. Again. For the third time.

SOMEONE PLS ANSWER THIS IK THERES NO PICTURE WITH IT BUT I NEED THE ANSWER BADLY.


Do you think what you observed is evidence that genes are instructions for proteins? Why or why not?

Answers

cant you please send the image

Answer:

no

Explanation:

parents can't pass down through genes you get them for yourself

How do plantes give off co2​

Answers

Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration.

Hope this helps

The goal of meeting economic and humans needs is to improve blank of life

Answers

Answer:

Quality

Explanation:

HERE IS THE QUESTION;

The goal of meeting economic and humans needs is to improve _____ of life.

In economics, need are things required

to survive. They are things individuals can not afford to live without them. These could be adequate nutritional food, appropriate healthcare as well as water and protective housing. It could also be physical and economic security, and basic education.Social reproduction is essential in satisfying human needs. Changes in the economic needs can be known through state of reproduction. It should be noted that the goal of meeting economic and humans needs is to improve quality of life

If an Arctic polar bear is transferred to a zoo in tropical Singapore, it will not be able to survive. What could be the reason for this?

Answers

Answer:

An Arctic polar bear could not be able to survive living in singapore because of the climate or weather which is different from wich an arctic polar bear usually lives in

Explanation:

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