Which best describes the difference between physical and chemical changes? *

(1 Point)

A. Physical changes only change the size or shape, but chemical changes change the molecular structure and

create a new substance

B. Physical are always visible changes and chemical changes are never visible.

C. Chemical changes only change the size or shape, but physical changes change the molecular structure and

create a new substance

D. Chemical are always visible changes and Physical changes are never visible

Answers

Answer 1

Answer:

A. Physical changes only change the size or shape, but chemical changes change the molecular structure and  create a new substance.


Related Questions

how do you feel about using solar panels?

Answers

That is your opinion.
It is affective but it needs to be clean daily. It also saves money

which of the following is not an example of homeostasis? A. after plunging into icy cold water Gary's core body temperature rapid drops. B. while exercising Julie has heart rate and breathing increase the balance to increase oxygen used by her muscle cells. C.on a hot day Martin doesn't drink very much water heater kidneys respond by removing very little water from his blood resulting in yellow concentrated urine. D.after eating a candy bar April's pancreas secretes insulin causing extra blood sugar to be removed PLZ ANSWER QUICKKKK​

Answers

Final answer:

All the options except A are examples of homeostasis, where the body maintains internal stability. In option A, Gary's temperature drops rapidly due to the icy water, which is a failure to maintain homeostasis.

Explanation:

Homeostasis refers to the process of maintaining a stable internal environment within an organism, despite the changes in external conditions. The body's various systems engage in a constant dance of adaptation and recalibration, keeping key factors like temperature, glucose levels, and water content steady. Failure to do so can lead to detrimental health effects, or in severe cases, possibly death.

Among the options you mentioned, A. 'after plunging into icy cold water Gary's core body temperature rapid drops' is not an example of homeostasis. This is because homeostasis involves maintaining internal equilibrium. In this case, Gary's body temperature is rapidly dropping due to the icy water, rather than being maintained at a stable level.

Option B, C, D describes the body's efforts to maintain stable heart rate, hydration, and blood sugar levels respectively – all of which are examples of homeostasis.

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Which adaptation would be beneficial to a desert plant?
A. Fleshy leaves that store water
B. Porous leaves that lose water easily
C. Vines that grow up tall trees
D. Flat leaves that maximize light absorption

Answers

The answer is A. Fleshy leaves that store water.

hope this helps !
The correct answer is A

A scientist was studying how a specific virus infects skin cells. In a lab, the scientist exposed a group of skin cells to the virus. Over
time, the number of living skin cells in the group decreased.
Which statement explains why this change occurred?
A.
Viruses reproduce before they enter cells, and the new viruses infect these cells.
B.
Viruses eat living cells to provide energy for reproduction.
C.
Viruses reproduce inside of their host cells, eventually killing the cells.
D.
Viruses reproduce outside of cells, creating harmful chemicals that kill the cells.​

Answers

The answer is C.
Viruses cannot reproduce without a host. Viruses do not eat selves to provide energy for their reproduction.
Viruses do not reproduce outside of cells nor do they create harmful chemicals on their own.


A photoautotroph uses what for energy?
A. meat - it's a carnivore
B. plants - it's a herbivore
C. chemical energy - chemosynthesis
D. light energy - photosynthesis

Answers

Answer:

D. light energy - photosynthesis

Explanation:

Answer:

D

Explanation:

Light energy photosynthesis because they make their own food!

Carbon cycles in nature can be balanced, so the concentration of CO2 in the atmosphere stays relatively constant. However, if the total amount of trees and other plants increased worldwide, CO2 levels in the atmosphere would decrease. Explain why.

Answers

Answer:

During Northern Hemisphere spring and summer months, plants absorb a substantial amount of carbon dioxide through photosynthesis, thus removing it from the atmosphere and change the color to blue (low carbon dioxide concentrations).

I honestly don't know if this helps or not

40 POINTS AND BRAINLIEST FOR THE FIRST RIGHT ANSWER

Which electromagnet is the strongest?

Answers

number 3 is the strongest electromagnet

Answer:

The second one

The diagram illustrates one method of genetic recombination.

A paternal and maternal gene cross-over.

Which method of genetic recombination is illustrated in the diagram?
a.)crossing over
B.)independent assortment
c.)fertilization
d.)tetrad formation

Answers

Answer:

A cross over

Explanation:

hope that helped                    

Answer:

A. crossing over

Explanation:

What breaks down and provides the body with glucose?

Answers

When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose. The stomach and small intestines absorb the glucose and then release it into the bloodstream.

just FYI you can look up these answers in google

Which of the following best describes Earth's orbital position in our solar system?

A. Outside of the gas giants
B. An inner planet
C. An outer planet
D. Outside of three smaller planets


Answers

Answer:B: the inner planet

Explanation:

Earth as an inner planet best describe Earth's orbital position in our solar system. (Option B)

Earth's orbital position in the Solar System

Earth is the third planet from the sun after Mercury and Venus and orbits at an average distance of 93 million miles, meaning that it takes sunlight about eight minutes to arrive. As you move outward from the sun, the planets are spaced increasingly farther apart. Jupiter is about five times as far from the sun as earth, while Neptune is some thirty times farther.

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Herbicides are non-selective for what type of use?
O Golf courses
O Garden
O Yards
Industrial

Answers

Answer:

this is some useful info you could use!

Explanation:

Pre-emergent herbicides are used to stop the germination of plant seeds. A non-selective herbicide tries to kill most plants while a selective herbicide is designed to kill specific types of plants, usually grasses or broad leaf weeds.

But the answer is yards:::::::::

Which snake adaptation best helps it to survive in its community?

Answers

Venom and camouflage

Why is temperature important to ocean water? HELP ASAP WILL MARK BRAINLIEST!!!!

Answers

Water warms up more slowly than air but can hold more heat – water needs 4 times as much energy to raise its temperature by 1ºC as the same mass of air does – so the ocean plays an important part in taking up energy from the Sun and stopping the Earth getting too hot.

the boa constrictor in the Everglades is an example of what species that is impacting local species​

Answers

Answer:

invasive

Explanation:

Answer:

a invasive species

Explanation:

DNA is also a ___________ ___________, which means it is composed of thousands of subunits called ________

Answers

I don’t know the first two but the last one the thousands of subunits are called nucleotides

Photosynthesis equation?

Answers

Answer:

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Explanation:

Carbon dioxide + water + energy from light produces glucose and oxygen.

Answer:

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.

Explanation:

The carbon cycle consists of a number of biotic (living) and abiotic (nonliving) factors that act as carbon reservoirs, or locations where more carbon is stored than released. Carbon travels constantly from reservoir to reservoir, sometimes stopping for a very long time and sometimes stopping for only a short time. Which of the following are abiotic carbon reservoirs?

(choose all that apply)


oceans


animals


atmosphere


fossil fuels


sun


decomposers

Answers

Answer:

Fossil fuels

Atmosphere

decomposers

Explanation:

The following are abiotic carbon reservoirs: oceans, atmosphere, fossil fuels, and the sun. As abiotic substances don't reproduce like animals and plants, while biotic organisms can,

What is the carbon cycle?

The carbon cycle is the process by which carbon is exchanged among the Earth's atmosphere, oceans, land, and living organisms. Carbon is constantly moving between these reservoirs through various processes, such as photosynthesis, respiration, and decomposition. Abiotic (non-living) reservoirs are locations where carbon is stored, but there is no biological process associated with them. The carbon cycle maintains the rate of photosynthesis too.

Hence, the following are abiotic carbon reservoirs: oceans, atmosphere, fossil fuels, and the sun. As abiotic substances don't reproduce like animals and plants, while biotic organisms can,

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A scientist has a very small sample of DNA. To analyze the DNA, which would be the MOST USEFUL first step for the scientist to follow?

A. Use restriction enzymes to make multiple copies of the DNA.
B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.
C. Transfer the DNA into bacteria, and allow the bacteria to be replicated many times.
D. Use restriction enzymes to cut the DNA into many small pieces.

Answers

The correct answer is option (B).The most useful first step for analyzing a very small DNA sample is to use the Polymerase Chain Reaction (PCR) to make multiple copies of the DNA. PCR allows for rapid amplification of DNA, providing sufficient quantities needed for subsequent analyses like restriction enzyme digestion and gel electrophoresis.

To analyze a very small sample of DNA, the most useful first step is to use the Polymerase Chain Reaction (PCR). PCR is a widely used technique in molecular biology that permits rapid amplification in the number of copies of specific DNA sequences. This method follows the principles of DNA replication, allowing for the exponential increase of DNA in a short period to generate large quantities necessary for analysis, making it extremely useful in various applications such as research, forensic investigations, and clinical diagnostics.

Restriction enzymes are used to cut DNA into pieces based on specific sequences, which can then be analyzed using gel electrophoresis. However, without enough copies of DNA, restriction enzyme digestion is not viable. Inserting DNA into bacteria is another method of DNA amplification but is more time-consuming compared to PCR.



Uri tests a material and determines

that it is a mineral. Which of these

observations supports his

conclusion?

The material was found underground.

The material was not a solid.

The material was made of crystals.

The material was heavy.

Answers

Answer:

Explanation:

The properties of a mineral include

A definite chemical composition and crystal structure

Created through Inorganic processes

Solid

These are the main differences between rocks and minerals

UL
Virus
1. Disease can be caused by viruses, bacteria,
fungi, parasites, or toxic chemicals. Which of these
diseases is the result of toxic chemicals?
O A. Polio
B. Impetigo
O c. Malaria
D. Emphysema

Answers

It is D. Emphysema is caused by lack of air flow into the lungs which is caused by pollution. And pollution is caused by toxic chemicals.

First answer receives brainliest!!!!
Which letter(s) indicate a warm ocean current?
P.s- the pic goes with the question

Answers

Answer:

B

Explanation:

Which animal is an ectotherm? eagle turtle whale kangaroo

Answers

Answer:

Turtles are ectotherms.

The answer is an eagle:)

What cell type must enter a female clams body in order for glochidia to form

Answers

Answer:

Sex cells or reproductive cells

Explaination:

Freshwater clams  are hermaphrodites and produce both eggs  and sperm.

So the freshwater clams reproduce by releasing their reproductive cells (sex cells or gametes) into the water column. The sex cells then enters the female clams body and undergo internal fertilization and produces glochidia. The glochidia then released in the surrounding water.

Hence, the sex cells are responsible for the reproduction of female clams.

What change (or transition) in habitat did whales' ancestors make?

Answers

Answer:

Change in habitats from land to sea.

Explanation:

A loss of species diversity in the oceans would MOST LIKELY result in a shortage of which of these? A) food B) medications C) minerals D) mountains

Answers

The answer is: food

Explanation: loss of species means there won’t a lot of animals/plants in the ocean, which means less food.

Which two sentences describe ways that populations might be harmed by floods?

A. Organisms that thrive jn moist conditions have more places to live

B. Animals who’s shelters are on land drown while the land is under water

C. Plants that were living in soil that is washed away are killed

D. Animals that lay eggs in water have more chance to reproduce.

Answers

Answer:

I'm not sure but in my condition the answer is a

Answer:

B. Animals who’s shelters are on land drown while the land is under water

C. Plants that were living in soil that is washed away are killed

A snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of a(n) _____.

A. invasive species
B. keystone species
C. introduced species
D. extinct species​

Answers

Answer:

c

Explanation:

A snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of an introduced species (Option C).

What is an introduced species?

An introduced species is a species that has been introduced into a new ecosystem, generally by human activities.

In general, introduced species are not well adapted to the new environmental conditions after introduction.

In conclusion, ​a snake that escapes into an ecosystem with a range of temperatures it cannot tolerate well is an example of an introduced species (Option C).

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5) Why is mimicry a helpful adaptation?




6) Why might a predator stay away from an animal with warning coloration?



TYPE HERE

TYPE HERE

Answers

Ok so answer for 5 would be
5) a mimicry could be a great fully helpful adaption because as an example, the butterfly’s that blend in with trees, or the butterfly’s that look like birds, can either scare away predators or they can blend in.

6) as an example, a blue tongue skink has a blue tongue which is very common in venomous animals. Whenever said skink is threatened, it puffs up, opens its mouth, and hisses. When most predators see the tongue, they assume it’s venomous/poisonous because of the bright color. Another example would be milk snakes who look like coral snakes to scare away predators

1. Explain, in your own words, the importance of recycling cellular material instead of
just throwing it away. In your response, relate recycling by the lysosome to
recycling plastic products.
please answer asap and with more than one sentance

Answers

Answer:

By recycling, it is possible to save a significant amount of energy that would otherwise be used to synthesize cellular structures.

Explanation:

Similarly to the function of lysosomes, the recycling process of plastic can help to save energy. The lysosomes are organelles that contain lytic enzymes that help to degrade cellular components, which is a necessary step before recycling these structures.

What is heat?

A. Temperature
B. Thermal energy
C. Electricity
D. Electromagnetic energy

Answers

Heat is thermal energy
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