What is the hallmark of a chemical change?

Answers

Answer 1
There are five signs that indicate a chemical reaction has occurred: odor, energy change, gas bubbles, precipitate formation, and color change. When any of these changes occur, the reaction is irreversible and cannot be undone.

Related Questions

question on picture for biology

Answers

Answer:

because doctors can determine your family's risk from your ariments

Explanation:

hope this helps

Answer:

First one I think

N O 2) Select the best answer. What are three important minerals found in soil? O nitrogen, phosphorous, potassium O carbon, oxygen, calcium aluminum, lithium, magnesium copper, gold, silver​

Answers

Answer:

Nitrogen, phosphorus, and potassium

Explanation:

Answer:

phosphorus, nitrogen and potassium

Unit 5 DQ 1 Debate on global warming The issue of global warming has become an unending debate. Which side of the debate are you in? Support your decision with one reference​

Answers

Answer:

Global average temperatures have increased in evolving patterns in which cooler temperatures (shown in blues) have generally changed to warmer temperatures (shown in progressively intense reds).

How does the movie “The Martian” related to a biology concept?

Answers

Answer:

Because of the garden that the dude made on mars.

Explanation:

The dude grew plants from his crew's poop and made a little tent with airtight seals, and as he said, once you grow something, you colonize it.

what is the main difference between the plant cell and Animal cell

Answers

Answer:

PLANT CELLS HAVE A CELL WALL

Explanation:

THANK ME LATER

Answer:

Heyaa!! My Name Is Pinky and i'm here to inform you that you're answer is...

Explanation:

!!!! there are a few differences between plant and animal cells BUT!! one major difference is their structure, animals are enclosed by a cell membrane, but plant cells have a cell membrane and a cell wall to give them a more solid form another major difference is that plant cells have chloroplasts for photosynthesis whereas animal cells do not because they do not undergo photosynthesis !!!!

  Have an amazing day!!!

~Pinky~

HELP ASAP
Which of the following is an example of homeostasis?
Q. During a time of high stress, Justin's heart races, his muscles tense, and he feels
sweat dripping down his forehead.
R. Sick with the flu, Alison's body temperature rises to fever levels.
S. Boris doesn't drink very much water one day. To compensate his kidneys remove less
fluid from his blood, and produce less urine than normal.
T. As Grace races up the ten flights of stairs to her apartment, the muscle cells in her
legs produce excess lactic acid, causing a burning sensation in her legs.

Answers

Answer:

The correct answer is  Boris doesn't drink very much water one day. To compensate, his kidneys remove less fluid from his blood and produce less urine than normal

Hope this helps :)

Explanation:

Which natural events likely caused Earth's past mass extinctions?

Answers

In my opinion

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
I hope it’s help

Answer:

Its because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes.

Explanation:

Is bacteria prokaryotic or eukaryotic

Answers

The answer to this question is Prokaryotes
It’s the second word

Based on the graph, how are the trends in greenhouse gases between the years 1500 and 2000 likely to affect the climate on Earth?

Answers

Answer:

The atmosphere would retain more heat, raising global temperatures.

Explanation: got this correct!

Answer: The atmosphere would retain more heat, raising global temperatures.

Explanation:

Got it right on PLATO

How do increases in human consumption of natural
resources impact the Earth

Answers

Answer:

The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases.

hope it helps

why are minerals important for our body? describe the 2 groups of minerals

Answers

Minerals are needed for the proper composition of body fluids, including blood, and for the proper composition of tissues, bone, teeth, muscles and nerves. Minerals also play a significant role in maintaining healthy nerve function, the regulation of muscle tone, and supporting a healthy cardiovascular system. There are two kinds of minerals: macrominerals and trace minerals.

Explanation:

.

The assistant strength and conditioning coach for a small college works with athletes in all sports. With only two lifting platforms and four squat racks, space is limited and training sessions are chaotic. Morning and early afternoon hours are the low-activity times of the day. At 3 p.m., student-athletes fill the room beyond capacity, making individualized instruction and room supervision difficult. What steps should the assistant strength and conditioning coach take to properly address these concerns?

Answers

Answer:

The solution to these question can be defined as follows:

Explanation:

Both students including athletes who undertake the program can be assigned slots relating to some period the classical or athlete should report completing their practice. The slots aren't allowed to continue.

They have a structured exercise template for each person, that helps for easy student or athlete monitoring, based on their skill.

This can be encouraged to students and teachers to attend daily and midday meetings.

Where would you be likely to find the alpine tundra biome?
a. the Russian north woods
b. central plains of the United States
c. the southern most tip of Australia
d. a mountain range in Europe

Answers

Answer:

The answer is D.

Explanation:

D- A mountain range in Europe

Alpine tundra is found on high-latitude landmasses, above the Arctic Circle like Russia, Greenland, Iceland, and Scandinavia. Thus option A is correct

What is alpine tundra?

Alpine tundra is a type of ecosystem that occurs at high elevations characterized by colder temperatures, long winters, and growing seasons are shorter with no trees.

The Russian north woods have Treeless tundra and distinctive vegetation known as Beringian woodland, high mountain range, and long winter. so option A is correct.

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Where would you collect
data during an
experiment?

Answers

Answer:

Recall that data can be collected in two main ways: (1) through sample surveys or (2) through designed experiments. While sample surveys lead to observational studies, designed experiments enable researchers to control variables, leading to additional conclusions.

PLS HELP!! ASAP DUE TONIGHT!!

The saturated fats of animals differ from the unsaturated ones of plants. Unsaturated fats have

A. higher molecular weights.

B. more metabolic processes that they participate in.

C. nitrogen atoms in their structures.

D. a higher number of double bonds between carbon atoms in their structures.

E. more functional utility in animal species, particularly in marine life forms.

Answers

Answer:

D. a higher number of double bonds between carbon atoms in their structures.

Explanation:

Rearrange them in the correct sequence.

Harvesting, Sowing, Manuring, Tilling and Ploughing, Irrigation, Weeding.

Plzz Help ASAP​

plz ASAPPP

Answers

Tilling, Ploughing, Sowing, Manuring, Irrigation, Weeding, Harvesting.

Non vascular plants are quite commin in the forests along the coast of Norther California but are relatively rare in the ecosystems around Davis in the Central Valley. What aspects of the life cycle of these plants make it difficult for them to reproduce on our area

Answers

Answer:

The Central Valley of northern California is a region where there is little water supply, while nonvascular plants cannot efficiently store water and they have primitive traits that are dependent on water for reproduction.

Explanation:

The Central Valley of northern California is characterized to have little natural precipitation/snowmelt during the dry summer months. In addition, California's climate also has extended periods of drought. On the other hand, non-vascular plants such as mosses and liverworts, are a type of plant that lacks vascular tissues (xylem and phloem), and they also lack true roots, stems, or leaves. These plants cannot efficiently absorb and store water (which fundamental for survival), and thereby the success of these plants in establishing and reproducing in the ecosystems of the Central Valley is limited to their physiological tolerance to desiccation. Moreover, non-vascular plants may also exhibit primitive traits related to their reproductive cycle (e.g., a flagellated sperm) that are dependent on water for reproduction.

Protein Synthesis and Codons Practice
DNA → T T C A A T G G T C T A G G G

RNA →

Amino Acids →

Answers

Answer:

RNA AAGUUACCAGAUCCC

Explanation:

Remember A codes for U

C for G

G for C

T for A

The amino acids will be for every codon (every three letters)

I don’t have a codon chart to translate at the moment but I hope this helps:)

What is accomplished during meiosis 1

Answers

Answer: However, Meiosis I begins with one diploid cell and ends with two haploid  cells, halving the number of chromosomes in each cell.

Explanation:

which organ is responsible for helping to keep the water concentration equal on each side of the cell membrane?
(please help I've been stuck on this for 2 days)

Answers

Answer:

solute membrane

Explanation:

Kidney is the main organ which is responsible for helping to keep the water concentration equal on each side of the cell membrane.

What is Kidney?

The kidneys are the main organs in the body which remove waste products and extra water from the blood in the form of urine and also help to keep the chemicals such as sodium, potassium, and calcium balanced in the body. The kidneys also secrete hormones which help control blood pressure and stimulate bone marrow to make red blood cells.

Kidneys maintain water concentration in the body. Kidneys maintain homeostasis through osmosis. Osmosis is the phenomenon of movement of water or fluid particles from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.

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Tectonics plates float on the ?
A.outer core
B.inner core
C.mantle
D.lithosphere

Answers

Answer:

I think mantle

Explanation:

Answer:

Mantle  

Explanation:

The rocky surface floats slowly on the mantle.

Brainliest please :)

difference between antigens and antibodies?​

Answers

Answer:

Antigens are molecules capable of stimulating an immune response. Each antigen has distinct surface features, or epitopes, resulting in specific responses. Antibodies (immunoglobins) are Y-shaped proteins produced by B cells of the immune system in response to exposure to antigens.

Explanation:

Plz mark as Brainliest

hopes this helps

indicate FOUR
reasons why you think having it may enhance responsible living in your environment

Answers

Answer:

Can you please elaborate on ur question??

: d

Please elaborate on question.

Which of the following are the products of respiration?
1)ATP, Water, and Oxygen
2)Carbon dioxide, Oxygen, and Water
3)ATP, Carbon Dioxide, and Water
4)Glucose, Water, and Carbon Dioxide

Answers

3 would be the best choice of cellular respiration

True or False? The skills and characteristics needed for a high-quality friendship are the same skills and characteristics needed in a committed long-term relationship or marriage.

Answers

True
Hope this help

if all the bees in the hive come from the queen how are they related
I NEED AN ANSWER

Answers

Answer:

Aren't they brothers and sisters

Answer:

The queen had all made them, so theyre brothers and sisters.

How much time does it take to use 300 W of power to do 1800 J of work? Round your answer to the near
number.
SERE
The time is
S.

Answers

Answer:

the answer is 6 secs rounded to nearest ten is 10

Explanation:

hope it helps

why is it important to determine the manner/mechanism of death

Answers

no i decide when someone death is coming. and i’m always right like i can say your death is tomorrow and u will pass away tmr !!

I’ll mark u as brainliest!

Answers

Answer:

39 purple stemmed plants

39 green stemmed plants

Explanation:

You'll end up with half and half! :)

what are all the zodiac names
if I was born in september what is my zodiac
I WILL GIVE 20 POINTS FOR THIS

Answers

Answer:

Virgo

Explanation:

Have a great day :)

Answer:

libra, cancer, aries, scorpio, leo, pisces, saggitarius, aqurious, capicorn, tarous, and gemini

Explanation:

Virgo

The zodiac sign for September  is Virgo.

This zodiac symbol is considered to influence those born August 23 - September 22, under the Virgo zodiac sign

Other Questions
ARE the square root of the positive integer irrational? if not given an example of the square root of a number that is a rational number Which equation best represents the relationship between x and y in the graph?A. y = 3x + 3B. y = x + 3C. y = 3x - 1D. y = 13 - 115 points pls I need ASAP Unit TestA brand name drug is developed as a new treatment for diabetes. A drug manufacturer develops a generic version of the same drug five years later. Which option BEST explains what the generic drug manufacturer will do next?a. advertise and sell the new generic drugb. get the generic drug added to the Orange Bookc. wait two more years to sell so as not to violate the patent.d. wait five more years to sell so as not to violate the patent.Please select the best answer from choices provided indicate FOURreasons why you think having it may enhance responsible living in your environment If Amy has 5 apples and she eats 3 how many does she have left? How do I solve this problem? Look up a company in a field that you like. This can be a company in science, education, politics, math, sports, clothing, etc. Identify 2-3 advertisements that are used for their company. Analyze and evaluate the techniques that they use in their advertisements and how it affects their audience. Need help asapp!! Question: What are some ways in which china was isolated from the rest of the world and how did this impact its overall development? NEED HELP The main difference between kinetic energy and potential energy is thatSingle choice.(2 Points)kinetic energy involves position, and potential energy involves motion.kinetic energy involves motion, and potential energy involves position.although both energies involve motion, only kinetic energy involves position.although both energies involve position, only potential energy involves motion. The fight against communism became known as the ______pleaseee helpp a description about agriculture SOMEONE HELP ME1. How many grams of C are present in 4.86 grams of carbon dioxide?grams C.2. How many grams of carbon dioxide contain 1.73 grams of O ?grams carbon dioxide. Jeans Vegetable Market had the following transactions during 2014: 1. Issued $50,000 of par value common stock for cash. 2. Repaid a 6 year note payable in the amount of $22,000. 3. Acquired land by issuing common stock of par value $50,000. 4. Declared and paid a cash dividend of $7,000. 5. Sold a long-term investment (cost $3,000) for cash of $6,000. 6. Acquired an investment in IBM stock for cash of $10,000. What is the net cash provided by financing activities? Group of answer choices $21,000 $67,000 $0 $28,000 What type of reaction occurs when one element or ion within a compound is exchanged with another element or ion? combustion decomposition single-displacement double-displacement Solve the following equation for x 2log: 2x = 2 Describe what method you used to solve the problem and why? Lucia's first language is Italian. As she reads a novel, she comes across this sentence. Ella tired of the crowds of well-wishers and sneaked into the coat closet for a moment of solitude. How might Lucia best unlock the meaning of the word solitude? Lucia should consider the meaning of the Italian word solitudine, which has the same cognate. Lucia should consider the meaning of the word solidify, which has the same prefix as solitude. Lucia should consider the meaning of the word gratitude, which has the same suffix as solitude. Lucia should consider the meaning of the word altitude, which rhymes with solitude. What is the constant of proportionality for the table below? A straw is placed inside a rectangular box that is 2" x 6" x 8". If the straw fits exactly into the box diagonally from the bottom left corner into the top right back corner how long is the straw? 3. Mohandas Gandhi's tolerance for what religious group led to his assassination in 1948?a. hindus b. christians c. taoistsd. muslims Alaina surveys 75 of her classmates and finds that 48% of them like to eat tacos. She also finds that 60% of her 45 relatives like tacos. How many moreof her classmates like tacos as compared to her relatives?