CHEMISTRY MIDDLE SCHOOL

Which of these is most likely to become a carbon film?O a dinosaur leg bone
O a sea creature's shell
O a flowering plant
O a tree trunk

Answers

Answer 1

Answer: A flowering plant

A sea creatures shell

Answer 2

Answer:

Answer:

C- FLOWERING PLANT

Explanation:

100% on edge

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Read the following selection from the section "What Is Intubation?"Having a tube down your throat isn't exactly pleasant because it affects a patient's ability to talkor eat. But it's important for getting the right amount of air into the lungs.Which answer choice BEST supports the idea that intubation is a necessary part of ventilator treatment?(A) But when the lungs fill up with fluid or become highly inflamed, the lungs can't expand enough, Lutchensays.(B) This actively pushes air into the lungs and can keep the levels of oxygen and carbon dioxide in theblood close to normal.(C) If the ventilator simply blew into a person's mouth, the air might expand their cheeks or leak out of theirnoes instead of going into the lungs, he says.(D) When the lungs are damaged, the millions of balloons take in oxygen and release carbon dioxidedifferently than when they are healthy, he says.

What is a solid formed from liquid reactants during chemical reaction

Answers

A solid formed from liquid reactants chemical reactions is called a precipitate.

It is called a precipitate. Precipitates allow you to determine many things about a chemical reaction (that you will get to know in high school).

Is this statement true or false?Living things are classified by the characteristics they have in common.

Answers

True. Living things are classified by the characteristics they have in common.

All living organisms are classified within the organization based on extremely fundamental, shared characteristics.The classification of organisms is called taxonomy.

it really easy its true

What is the difference between endothermic and exothermic reactions?

Answers

Endothermic take in energy.
Exothermic give out energy.

I remember it by imaging that the energy is either 'ENtering' or 'EXiting'.

Hope this helps.

Final answer:

Endothermic reactions absorb energy from the environment and make it cooler, such as photosynthesis in plants, while exothermic reactions release energy into the environment and make it hotter, like burning wood in a fireplace.

Explanation:

Endothermic and exothermic reactions are different in terms of energy absorption and release. In an endothermic reaction, energy in the form of heat is absorbed from the surroundings into the system (reaction). This causes the environment to become cooler. An example would be the process of photosynthesis in plants.

In contrast, an exothermic reaction releases energy into the surroundings. As a result, the environment around an exothermic reaction heats up. An example of an exothermic reaction is combustion, such as the burning of wood in a fireplace.

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List five physical properties?

Answers

Some examples of physical properties are:

color (intensive)

density (intensive)

volume (extensive)

mass (extensive)

boiling point (intensive): the temperature at which a substance boils.

melting point (intensive): the temperature at which a substance melts.

Physical Properties are used to describe how something is. Examples include:

1. Color
2. Shape
3. Size
4. Density
5. Melting/ Boiling point
6. Ordor

Physical changes: occur when matter changes form but not composition (Ex: ice is still H2O). Examples of physical change are:

1. Phase Change (Boiling, melting, freezing, etc.)
2. Size and/ or shape change
3. Dissolving
4. No Color Change (Except dyes)

How are electrical currents and magnetic fields related

Answers

Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire.

In structure, the standard (Bohr) model of the atom is most similar to A: plum pudding

B: our solar system

C: chocolate chip cookie
dough

D: the Milky Way galaxy