Explain its significance. Check all that apply. Check all that apply. In chemical and physical processes, matter exchanges energy either as heat or work or both with the surroundings. Systems with high potential energy tend to change in the direction of lower potential energy, releasing energy into the surroundings. In the exchanges, the total energy is always changed; energy is created and destroyed. In the exchanges, the total energy is always conserved; energy is neither created nor destroyed. Systems with low potential energy tend to change in the direction of higher potential energy, releasing energy into the surroundings. In only physical changes, matter exchanges energy with its surroundings.

The question is incomplete. Here is the complete question.

Explain the significance of the Law of Conservationof Energy. Check all that apply.

1) In chemical and physical processes, matter often exchange energy with its surrounding.

2) System with low potential energy tend to change in the direction of higher potential energy, releasing energy into the surroundings.

3) In the exchanges, the total energy is always conserved; energy is neither created nor destroyed.

4) In chemical and physical changes, matter never exchange energy with its surroundings.  

5) In the exchanges, the total energy is always changed; energy is created and destroyed.

6) Systems with high potential energy tend to change in the direction of lower potential energy, releasing energy into its surroundings.

Answer and Explanation: Law of Conservation of Energy states that total energy is constant in any process. It may change in form or be transferred from one system to another, but the total remains the same.

So, analysing each statement above, we have:

In chemical and physical processes, matter CAN exchange energy with its surroundings, so first and fourth statements are incorrect.

Systems with higher potential energy tend to change in the direction of lower potential energy, and can release energy into its surroundings, so sixth statement is correct.

As cited above, in exchanges, total energy is always conserved, i.e. it is always constant, which means inside the system, energy is being transformed into another type of energy or transferred to other matter. Fifth statement is correct.

i would think klcio3

carbon is found in all living things. carbon atoms move constantly through

living organisms, the oceans, the atmosphere, and the earth’s crust in what is

known as the carbon cycle. the directions taken by carbon atoms through this

cycle are very complicated and can take millions of years to make a full circle.

all animals, from humans to the dinosaurs are part of the carbon cycle. when

animals eat food, they get carbon in the form of carbohydrates and proteins.

in animals, oxygen combines with food in the cells to produce energy for daily

activity and then gives off carbon. the carbon combines with oxygen to form

carbon dioxide (co2) and is released back into the atmosphere as a waste

product when animals breathe and exhale.

from 145-65 million years ago, earth was much

hotter than today and covered with dense,

tropical swamp forests. the trees and other

plants were immense and

provided an endless supply of

food for the giant animals that

roamed the land. somewhere in

the air above one of these

forests, a lone carbon atom has joined

up with two oxygen atoms to form a molecule of co2.

the co2 molecule was sucked into the tiny holes (stomata) on the leaf of a

fern plant and joined with sunlight, chlorophyll and water to make food and

energy in the plant’s cells through photosynthesis. the oxygen (o2) from the

co2 molecule was sent back into the atmosphere; the carbon atom (c) was

detached and used to make a molecule of sugar.

if that carbon atom had been eaten instead, a totally

different situation would have developed. let’s say

that a giant plant-eating dinosaur (herbivore) ate the

fern for breakfast, and swallowed the carbon in the

fern in the form of carbohydrates and proteins. in

the process of respiration, oxygen combined with

the carbohydrates and proteins in the dinosaur’s cells

to provide energy for its daily activity.