Which of these is an example of a chemical change?
O A. Freezing water
B. Tearing up a piece of paper
C. Dissolving sugar in water
D. Lighting a match

Answers

Answer 1

Answer:

D...lighting a match

Explanation:

because you cannot get back the original match back


Related Questions

What are some key chemical reactions that occur in your body?

Answers

The sum of all of the biochemical reactions in an organism is called metabolism. Metabolism includes catabolic reactions, which are energy-releasing (exothermic) reactions, as well as anabolic reactions, which are energy-absorbing (endothermic) reactions.

Answer:

metabolism is a chemical reaction in the body's cell the change food in to energy (answer would be Metabolism)

According to appearances, which light produces the healthiest plant?
Green
Blue
Yellow
Red

Answers

Answer:

Blue light

Adding 10-20% blue light allowed plants to grow much healthier, with a compact appearance. There is also far-red light which is has wavelengths that are lower than normal red light–similar to near-infrared wavelengths. Far-red light helps the plants produce greater yields.

Which type of lipid is one of the main structural components of all cell membranes?

A) Waxes
B) Oils
C) Phospholipids
D) Steroids

Answers

Answer:

C) Phospholipids.

Hope it helps you.

how many significant digits are there in 0.00840, 15.7, and 13.040?

Answers

Answer:

3sf, 3sf, 5sf

Explanation:

hope it helps!!!

What process adds carbon dioxide to the air?
nitrogen cycle
water cycle
respiration
photosynthesis

Answers

Answer:

Respiration

Explanation:

Photosynthesis removes carbon dioxide.

Nitrogen cycle deals with nitrogen, not carbon.

Water cycle deals with water, not carbon.

Answer:

la respiración

Explanation:

A mutation to the p53 gene can cause what type of disease?

-Cancer since the delay in the cell cycle is disrupted.
-Nondisjunction causing an abnormal number of chromosomes.
-Cystic fibrosis due to a mutation in the gene that codes for a specific protein.
-Sickle cell causing abnormally shaped red blood cells.

Answers

Answer: A mutation to the p53 gene can cuase cancer since the delay in the cell cycle is disrupted.

A mutation to the p53 gene can cause this type of disease: Cancer since the delay in the cell cycle is disrupted.

A cell cycle is as an ordered sequence of events that takes place within a living cell as it grows and divide into two new daughter cells.

Cancer can be defined as the uncontrolled division of certain body cells, which then invade the surrounding tissues and interfere with the normal functioning of the body.

Some examples of cancer are:

Breast cancer.Prostrate cancer.Carcinoma.

A tumor can be defined as an abnormal mass of tissue formed when various body cells grow and divide more than its required or fail to when necessary (required).

Thus, it usually degenerate into cancerous growths (cancer).

In conclusion, it is caused by exposure to extremely dangerous radioactive substances such as gamma ray, uranium etc.

Read more: https://brainly.com/question/24152929

I need help with this please , I’ll mark you as a brainliest

Answers

If I eat candy then I will gain weight
If I shave my beard then it will grow back darker

With this you should be able to solve the rest :)

6. What are at least 2 requirements of a good hypothesis?

Answers

Answer:

A scientific hypothesis must be testable, and;

A scientific hypothesis must be falsifiable.

Explanation:

I looked it up o-o sorry if its wrong. :3

When people run quickly, they can sweat profusely. Their muscles undergo movement, and the loss of energy takes place. Based on this description, in which two ways is energy conserved when people run?
Heat energy is released from the body to the surroundings.
Heat energy is taken from the surroundings to the body.
Chemical energy is converted to mechanical energy that’s used for muscle movements.
Radiant energy is converted to mechanical energy that’s used for muscle movements.
Heat energy is converted to mechanical energy that’s used for muscle movements.

Answers

Answer:

Heat energy is released from the body to the surroundings.

Heat energy is converted to mechanical energy that’s used for muscle movements

Explanation:

Heat energy is released from the body to the surroundings.

State the 3 points of the Cell Theory

Answers

Answer:

1: all living things are made up of cells.

2: cells are the smallest units.

3: all cells come from preexisting cells through the process of cell division.

Explanation:

2
Question 2 Matching Worth 4 points)
(01.02 LC)
Match each term with its description
Match

Biosphere
Ecosystem
Biome
Habitat

A) A place in an ecosystem where an organism normally lives

B) Includes all diving things and the areas in which they live

C) A large geographical area classified by its climate and the plant
and animal life within it

D) Includes all living things functioning together with the physical
factors of their environment

Answers

Answer:

Good luck

Explanation:

A) is Habitat

B) Biosphere

C) Biome

D) Ecosystem

Answer:

Explanation:

A) is Habitat

B) Biosphere

C) Biome

D) Ecosystem

The mass of a block was measured using a triple beam balance. Using the picture, determine the mass of the block.


A.
709.4 g
B.
79.4 g
C.
970.4 g
D.
179.4 g

the answer is ..

179.4

Answers

Answer:179.4

Explanation:

what is science???? explain​

Answers

Answer:

The term science comes from the Latin word "scientia" which means knowledge. But this statement is too broad in its everyday use. In a narrow sense, science is a discipline consisting of physical sciences (physic) and life sciences (biological sciences).

Some plant cells have cell walls, while other plant cells have a cell membrane
for protection.
the flow of water
T or false and and explanation it’s 2.21

Answers

Answer:

False, all plants cells have cell membrane, in addition most of them have also cell wall. They have both

Which of these is considered a long-term effect of alcohol abuse?

Answers

Answer:

you didnt give the options for the awnser but these are some examples...

Explanation:

The long-term effects of alcohol abuse include alcoholism, liver disease, pancreatitis, malnutrition and cancer.

9. Why is a control group generally
very important in an experiment?

Answers

Answer:

Control is a group generall very important in an experiment because it allows you to eliminate and isolate these variables.

Amylase works best at a neutral pH of 7. Where in your body are there enzymes which work best
at an acidic or low ph?

Answers

Enzymes in the stomach work well in an acidic environment due to the atmosphere being a low ph there. It helps to break down food and continue the digestion process

Qué hormonas y funciones se relacionan con los organos digestivos y escretores?

Answers

Answer:

Las hormonas controlan las diferentes enzimas digestivas que se secretan en el estómago y el intestino durante el proceso de digestión y absorción. Por ejemplo, la hormona gastrina estimula la secreción de ácido del estómago en respuesta a la ingesta de alimentos. La hormona somatostatina detiene la liberación de ácido del estómago.

Explanation:

The cell walls of a plant consist mostly of cellulose, a carbohydrate, which provides a strong structure. The cell membrane gets its structure primarily from lipids, and embedded proteins allow for material transport.

Answers

Answer:

Common to all plant species, the cell wall is the tough outer coat that protects the plant cell. The cell wall is mostly carbohydrate‐based, comprising three major classes of polysaccharides: cellulose, hemicellulose and pectin. There are also important structural proteins as well as phenolic and aliphatic polymers.

Explanation:

5. Forms which of these ?
PCI
compound
molecule

Answers

Answer:

Compound

Explanation:

What protects the Earth from dangerous EM waves

Answers

Ozone layers protects the earth from dangerous EM waves

Akeem cut his finger during an investigation, and it is bleeding slightly. Before helping him bandage the wound, which precaution should the teacher take?

Answers

The teacher should clean the wound

Explanation:

the cut could've gotten something in it

The teachers gotta clean the cut

What is a pure substance?
A. Atoms that are all the same
B. Molecules that are identical
C. A and b
D. None of the above​

Answers

Answer:

option C is the correct

B



if yoy have notes…

what does the scientific process accoplish?

Answers

Answer:

The scientific method involves deriving hypotheses from theories and then testing those hypotheses. If the results are consistent with the theory, then the theory is supported. If the results are not consistent, then the theory should be modified and new hypotheses will be generated.

Distinguish between a prokaryotic cell and a eukaryotic cell by selecting the accurate statements that apply to eukaryotic cells. Check all that apply

Answers

Answer:

A prokaryotic cell is an under-developed cell which lack nuclear membrane whereas an eukaryotic cell is the well developed cell with nuclear membrane.

differentiate between Angiosperms and gymnosperm​

Answers

Answer:

Angiosperms are vascular plants bearing the seeds in fruits or mature ovaries whilst gymnosperms are other types of the plant which bears the seeds directly on the sporophylls but without any cover.

Explanation:

Examples of gymnosperms include cypress,pine, redwood, spruce and ginkgo.

Examples of angiosperms include apple, banana,peach, cherry and orange.

Also, angiosperms are seeds producing flowering plants whose seeds are enclosed within an ovary.

Gymnosperms are also seeds producing non flowering plants whose seeds are unenclosed.

Hope it helps.

Please mark as brainliest .

What is something that exist but doesn’t have anything to do with science, law or rules, or religion

Answers

Answer:

does a table have anything to do with science, law, or religion? pretty sure tables exist.

What do we call molecules that are only
made of hydrogen and carbon?

Answers

Answer:

Hydrocarbons

Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen.

What terms did you put in the cytoplasm to show they belong to
both prokaryotes and eukaryotes?

Answers

Answer:

i think it is  The DNA will be replicated and condensed.

Explanation:

An object's density is 15 g/cm^3 and its volume is 3 cm^3. What is its mass?​

Answers

Answer:

45g=0.045kg

Explanation:

ρ=m/V

so, m=ρV=15×3=45g=0.045kg

Hope, this helps you.

Answer:

It is 45 /cm^3

Explanation:

...

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