CHEMISTRY MIDDLE SCHOOL

Which Idea was once accepted is now considered a scientifically inaccurate A.tge nucleus is the center of the atom
b.an atom is solid material
c.electrons have a negative charge
d.electrons are arranged in layers

Answers

Answer 1
Answer: Well, the nucleus is the center, the electrons are negative and arranged in layers, so atoms are not necessarily solid (you know, liquids, gases and plasma is made of atoms too -- plasma from ions, true)
Answer 2
Answer:

Answer:

The answer is A

Explanation:

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What is a convection cell 12 points

Answers

a self-contained convective zone in a fluid in which upward motion of warmer fluid in the center is balanced by downward motion of cooler fluid at the periphery.

A sample of co2 solid and co2 gas differ in their

Answers

CO2(s) is a solid.  

CO2(g) means it is gas.

So they differ in their physical properties.

Physical propertiers means that they differ in their look.

How does the law of conservation of energy relate to the processes going on in the water and in the plants?

Answers

Answer: Matter is not destroyed, only changes forms.

Explanation: Take my answer with a grain of salt, I'm not a genius in this type of stuff but, the law of matter states that matter is not destroyed, only changes forms. This can be applied to photosynthesis because the plants take water and use it to make glucose to eat.

Again, I'm not genius so take my answer with a grain of salt but, hope it at least helps a little.

The law of conservation of energy is a fundamental principle in physics that states that energy cannot be created or destroyed in an isolated system; it can only change forms or be transferred from one part of the system to another. This law applies to various natural processes, including those occurring in water and plants. Here's how it relates to these processes:

1. Photosynthesis in Plants:
- Plants undergo photosynthesis, a process in which they convert light energy from the sun into chemical energy stored in the form of glucose (a sugar) and other organic molecules.
- The law of conservation of energy applies here because the energy in sunlight is transformed into chemical energy within the plant. This chemical energy can be stored and later used for various plant functions.
- Photosynthesis also involves the conversion of carbon dioxide and water into glucose and oxygen, but the total energy within the system remains constant, following the law of conservation of energy.

2. Water in the Hydrologic Cycle:
- The hydrologic cycle involves the movement of water between various reservoirs on Earth, including oceans, land, and the atmosphere.
- Water evaporates from the surface (e.g., from oceans, lakes, and rivers) into the atmosphere due to the input of energy, primarily from the sun. This energy causes water molecules to change from a liquid to a gaseous state.
- When the water vapor condenses in the atmosphere, it releases heat energy (latent heat), warming the surrounding air. This energy is then transferred to the surrounding environment.
- Eventually, the condensed water falls back to the surface as precipitation, releasing the stored energy in the form of heat.

In both of these natural processes, the law of conservation of energy is upheld. Energy is transformed and transferred, but the total energy within the system remains constant.

A passenger walks toward the rear of a moving train. Describe her motion as seen from a reference point on the train. Then describe it from a reference point on the ground.

Answers

If the train is moving from Point A to Point B, and this motion we arbitrarily deem "forward", then from the reference point of the train, she will be moving backward. From an external reference point, she will be moving in the same direction as the train, but with a lessened velocity.

What is the correct formula for iron(III) oxide?

Answers

Answer:Fe2O3

Explanation:

the roman numeral tells you the charge of the metal, and you know oxygen is -2 charge so you need the least common multiple of +3 and -2 so that they cancel out, which is 6 so you need 2 of the +3 and 3 of the -2

Answer:

Fe 3+

Explanation:

iron is Fe and it's 3 and has positive

The graph of y = 3x2 + 12x + 11 is shown.Use the graph to solve the equation 3x2 + 12x + 11 = 2

Answers

Explanation:

3*2=6

12x+11=23x

23x+6=29x

x=2
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