BIOLOGY MIDDLE SCHOOL

The collision of what causes the movement of heat in conduction?

Answers

Answer 1
Answer:

Answer:

Conduction is the movement of heat through a substance by the collision of molecules. At the place where the two object touch, the faster-moving molecules of the warmer object collide with the slower moving molecules of the cooler object.

Explanation:

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What happens when chemical bonds break and new bonds form?A.) Physical change
B.) A chemical reaction
C.) Matter is surface area increases
D.) Destroyed

Answers

When chemical bonds break and new bonds form then the Chemical Reaction takes place. The option B is the correct option.

A chemical reaction is the transformation of one or more chemicals, known as reactants, into one or more new substances, known as products. Breaking and establishing chemical bonds are the processes that change reactants into products.

Chemical reactions are an essential component of technology, society, and life itself. Many tasks that involve chemical reactions include burning fuels, smelting iron, creating glass and pottery, brewing beer, and making wine and cheese.

Thus, the correct option is B. A Chemical reaction.

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B) - A chemical reaction

Destroyed is not possible, as matter cannot be created or destroyed under the conservation of mass.

PLZZZZZZ HELPPPP Draw a sketch of your completed DNA model. Label each material and the part of the DNA molecule it represents.Answer:

Answers

Answer:

DNA - Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.

Function- DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.

  • Components- Deoxyribose sugar,
  • A phosphate,
  • A nitrogenous base.( adenine, guanine, thymine and cytosine)

Explanation:

Structure of DNA:

  • The image is a simplified representation of a short DNA molecule, with deoxyribose sugar molecules in orange, linked to phosphate molecules through a special type of covalent linkage called the phosphodiester bond.
  • Each nitrogenous base is represented by a different color – thymine in purple, adenine in green, cytosine in red and guanine in blue.
  • The bases from each strand form hydrogen bonds with one another, stabilizing the double-stranded structure.

Deoxyribonucleic acid, a macro molecule which has all the hereditary data or information in many living beings.

What is Deoxyribonucleic acid?

DNA plays an important role in the production of proteins, along with the metabolism, and reproduction of the cells.

The image is a simplified representation of a short DNA molecule, with deoxyribose sugar molecules in orange, linked to phosphate molecules through a special type of covalent linkage called the phosphodiester bond.

Each nitrogenous base is represented by a different color – thymine in purple, adenine in green, cytosine in red and guanine in blue.

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Which of the following is not true about Polar bears?

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After doing an investigation of polar bears. The statement from the options presented below the one that is NOT TRUE is that all polar bears hibernate. They remain active throughout the year.


Answer: A) They all hibernate.


I hope this helps, Regards.

In an area in which electricity costs 8 cents/kilowatt-hour, a 5 kW clothes dryer runs for 90 minutes to dry a load of laundry. How much did it cost to dry these clothes?A. $0.20
B. $0.30
C. $0.45
D. $0.60

Answers

D $0.60 because (5kW)x(90/60hours)x(8cents/kWh) = $0.60 --> D

Answer:

D

Explanation:

Which of the following accurately explains what it means to have a high specific heat?Group of answer choices

Less heat is needed to keep water at a high temperature

Water efficiently absorbs and retains heat.

Heat is quickly released from water.

Water maintains a constant temperature.

Answers

Answer:

the last choice

Explanation:

specific heat is the amount of heat required to raise the temperature this eliminates choice 1 and choice 3 and then the question doesn't specifically mention just water leaving choice 4 which is the answer

Original remains of insects may be found in hardened tree resin call ____.

Answers

Original remains of insects may be found in hardened tree resin called amber or sap
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