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Answer:

Burning of paper and log of wood.

Digestion of food.

Boiling an egg.

Chemical battery usage.

Electroplating a metal.

Baking a cake.

Milk going sour.

Various metabolic reactions that take place in the cells.

Explanation:

Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

Answer:

neptune

Explanation:

Answer: Economic geography takes a variety of approaches to many different topics, including the location of industries, economies of agglomeration (also known as "linkages"), transportation, international trade, development, real estate, gentrification, ethnic economies, gendered economies, core-periphery theory, the economics of urban form, the relationship between the environment and the economy (tying into a long history of geographers studying culture-environment interaction), and globalization.

Answer:

Physical properties: how soft a blanket it, how hard bread is, what color leaves are, what bleach smells like.

Chemical change: burning wood, rotting food, digestion, rusting of a nail.

Physical change: mixing salt and sugar, tearing a piece of paper, melting ice, chopping wood.

Explanation:

Physical properties are properties that are measurable.

Chemical change is when substances combine (fire and wood make burning wood) to make another substance. They aren't reversible. If you were to melt ice, you could refreeze it, you can't unburn wood.

Physical change is something that alters the form of the substance but not the chemical composition.

Hope this helps!

Answer:

Physical properties:what color leaves are,what bleach smells like

Chemical change:burning wood, rusting of  meatal

Physical change:mixing salt and sugar,melting ice

Explanation:

Answer:

Because oxygen is the combustion  fuel and glucose  is the substrate needed for synthesis of energy as ATPs during cellular respiration.Therefore Guillermo lacks enough energy as ATPs in her  body cells, especially skeletal muscles cells to complete the task of ascending the s steps.

For all the mitochondrial in cells(sites of energy production)   to receive needed glucose,and other metabolites needed for  energy synthesis; an efficient transport system is needed, so that  these materials   are available  immediately, in required amount. This system is called circulatory system.

And for the the supply of combustion fuel (oxygen) needed for the completion of the ATP synthesis mechanisms;  respiratory systems which  convey oxygen from the external environments to the circulatory system through breathing mechanisms, for distribution is needed.

Thus the  doctor needs to test both the circulatory and respiratory systems.

Explanation:

Answer:

Hello There!

Explanation: Your Answer will be, D) conduct electricity in water.

Both acids and bases conducts electricity and water.

When acid dissolves in water, they are good electrolytes.

When bases dissolves in water they are good electrolytes.

Electrolytes are liquid or molten substances that are able to conduct electricity.

they conduct electricity by the use of their ions in solution.

Since acid and bases ionize in solution, they will conduct electricity.

An acid is a substance that produces excess hydroxonium ion in solution.

A base produces excess hydroxyl ions in solution. Hope This Helps!

Answer:

It is getting colder because when you are at higher altitude the pressure gets lower. Causing the temperatures to change as he climbs up

Answer:

Dwarf planets do not travel around the Sun. ... Unlock all answers ... Dwarf planets do not have enough mass and gravity to be nearly round. Dwarf planets have not cleared other objects out of their orbital paths. ... 2039471 is waiting for your help. ... You might be interested in Everyone knows that Earth, Mars and Jupiter are planets. But both Pluto and Ceres were once considered planets until new ... It must be big enough to have enough gravity to force it into a ... It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun.A planet is a large space body which reflects the light of a star around which it revolves. The planets in our solar system are classified as inner planets and outer planets ... Consequently, you will find craters of varying sizes on the inner planets and ... an object must be in orbit around the Sun, have enough mass so that it has

Explanation:

Answer: 414,000 is the answer

Explanation: My name is Armalinda lets be friends

Answer:

Mg + O2 ---> MgO

Explanation:  V2O5 + CaS → CaO + V2S5. 5V2O5 + 5CaS → 10CaO + 5V2S5. 3V2O5 + 3CaS → 3CaO + 3V2S5.

Answer:

Chemical change

Explanation:

A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.

its not physical change: What is a physical change? A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.

its not chemical reaction: A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.  A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

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Answer:

The amount of water vapor in a given volume of air is humidity.The amount of water vapor in the air at any one time depends on temperature . Warmer air holds more water than cooler air. Clouds form when humidity is low and thetemperature is high . Relative humidity is defined as the amount of water vapor in the air divided by the amount that would have to be present in the same air to form a cloud or condense on a surface. Dew is related to the humidity of the previous day. The air temperature at which water vapor in the air condenses onto cool surfaces is the dew point.

Explanation:

Answer:B. 0.72 AU

Explanation:

Answer:

it is C

Explanation:

Answer:

c

Explanation:

Answer:

endoplasmic reticulum

Explanation:

I just took a test that had this question and this was the answer.

Explanation:

Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally. does she need from the food she ate and the air she breathes so that she can go on her run? (Sentence starter: The molecules Rosa needs from the food she eats and air she breathes are.

this science

Answer:

A Deterium nucleus

Explanation:

The answer option which is not a region of the Sun is: A. deuterium nucleus.

Sun can be defined as a medium-sized, main-sequence (yellow dwarf) star that is located at the center of the solar system and it supplies the heat energy and light that sustains life on planet Earth.

According to astronomical information and records, the Sun is marked to be the brightest, largest, and most massive celestial object within the solar system and it comprises the following regions:

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Answer:

There are two main reasons. First, Mercury is small and doesn't have much gravity so it's hard to hold onto an atmosphere. Second, Mercury is close to the Sun so any atmosphere gets blasted away by stuff being blown off the Sun.

Explanation:

Because Mercury has no atmosphere, it can't hold onto its heat very well. The night side of Mercury gets very cold, which brings down the average temperature of the planet and makes it only the second hottest planet in the Solar System after Venus.

Answer:

Nuclear fusion: reactions in which two or more elements "fuse" together to form one larger element, releasing energy in the process. A good example is the fusion of two "heavy" isotopes of hydrogen (deuterium: H2 and tritium: H3) into the element helium.

Explanation:

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Answer:

convection current waves

Explanation:

The study of chemicals is called chemistry.

The correct answer is D.

The heat convention is stated as the transfer of heat from one place to another due to the movement of fluid. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction and advection.

According to the question, the warm air rises up and travels along with the air.

The hot air also has a high temperature due to which the radiation of the heat transfer from one place to another.

Hence, the correct answer is D that is Warm air rises and takes heat with it; eventually, it cools and sinks.

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Answer:

All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.

Explanation:

Answer:

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Explanation:

Answer:

 Artificial diamonds are made using thallium carbonate. If thallium has an oxidation number of 1+ number 2  A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds. number 3 giant metallic, giant ionic, simple molecular, and macromolecular ... it has positive ions surrounded by a sea of delocalised electrons ... m/z value than Cl⁻. this means that F⁻ is more attracted to the Ca²⁺ ion more strongly ... What bond angle does beryllium chloride, BeCl₂ have? ... Give two examples of linear molecules.

The formula of thallium carbonate is Tl₂CO₃. The intermolecular force of attraction between electrons and protons proceed to the combination of two atoms. The net dipole moment in BeCl₂ is zero since they cancel each other due to linear geometry.

Thallium carbonate is an inorganic compound formed by the ionic bonding between thallium and carbonate group. The charge of thallium Tl is +1 and that of carbonate group is -2. Hence the chemical formula of the compound is Tl₂CO₃.

Unstable atoms with deficient number of electrons combines with other atoms to form compounds. The force that act between the two atoms is called intermolecular force of attraction.

The electrons of an atom is attracted by the positive charge of nucleus of other atom results in the chemical bonding.

Barium chloride is an ionic compound with linear geometry. The chlorine atom is highly electronegative and will attract the shared pair of electrons into it.

The two chlorines are arranges linearly on either side of Be thus, the dipole will be opposite in direction towards each chlorine atoms. Thus it cancel and net dipole moment become zero. That's why the compound is nonpolar.

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Answer:

omg lol XD

Explanation:

The statement which best  compares segmented worms and roundworms is that some segmented worms have setae, but roundworms do not.

Roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum.

Nematodes species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega journal Zootaxa puts this figure at over 25,000. Estimates of the total number of extant species are subject to even greater variation.

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Answer:

I don't know that sO Sis I CanT reAlly hElp yOu

Explanation:

SoRy