CHEMISTRY MIDDLE SCHOOL

During a chemical reaction ______.A.chemical bonds break.
B. matter is destroyed.
C. new atoms form.
D. two of the above.

Answers

Answer 1

Answer:

Answer:

A. Chemical bonds break.

Explanation:

During the chemical reaction, bonds break in reactants and new bonds form in products.

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A group of students performed an experiment to prove the law of conservation of energy. In the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. The table shows a partial record of the temperature of the water before and after shaking.Experimental Record
Temperature
Before Shaking 20 °C
After Shaking Unknown
What best predicts the unknown temperature? (3 points)

a. Less than 20 °C because the total energy of the system after shaking is lower

b. Greater than 20 °C because the total energy of the system after shaking is higher

c. Less than 20 °C, because the mechanical energy from shaking transforms to thermal energy

d. Greater than 20 °C, because the mechanical energy from shaking transforms to thermal energy

Answers

Answer: The most accurate answer is Option D.

Explanation: It's actually 22 degrees. Energy cannot be created of destroyed, but transferred and transformed to one form or another. The movement of the container, mechanical energy was transferred to the water, as heat energy. Therefore is raised the water temperatures slightly.

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Which state of matter has the least amount of energy?

Answers

Solid has the least amount of energy.

This is so because liquid is free to move and can fit in any shape.
Gas floats and is usually always free to move.

Solid isn't free to move unless some force moves it.

Matter has the least energy as a solid

What findings led Thomson to infer that particles that are smaller than atoms do exist?

Answers

That electrons are small enough to fit in side a atom . (:

What is the Name of RbC2H3O2

Answers

Answer:

Rubidium Acetate

Explanation:

Rb is Rubidium C2H3O2 is acetate

Answer:

Rubidium Acetate-

Hope this helps ^-^* Sorry if I'm wrong.

Explanation:

The job the part does within organism is the

Answers

function. A more descriptive answer can be given if the "part" is defined.

Final answer:

The job a part does within an organism, whether it is a cell, tissue, organ, or organ system, is crucial for the life and health of the organism. Each part is designed to carry out certain functions, which collectively ensure the organism’s survival, growth, and reproduction.

Explanation:

The role a part plays within an organism, also known as its function, depends on whether the part is a cell, tissue, organ, or organ system. In a multicellular organism, all parts work together to maintain the life and health of the entire organism. For example, an organ such as the heart has the function of pumping blood to distribute nutrients and oxygen around the body.

Each part is uniquely designed to suit its function. A living organism is capable of performing all physiologic functions independently, and these functions are determined by the anatomy (structure) and physiology (functionality) of its cells, tissues, organs, and organ systems.

Organization: This is a key function of life where organs are systematically arranged into organ systems. They work harmoniously to perform functions of an independent organism.
Metabolism: All living organisms require energy to carry out their functions. This energy is provided by various metabolic reactions happening at cellular levels.
Responsiveness and Movement: Organisms respond to changes in their environment and move towards or away from stimuli for survival.
Development: Organ development, or organogenesis, is the process by which tissues form specific organs during growth.
Reproduction: This is a fundamental feature of all life forms to ensure the continuity of life.

Learn more about Organism Function here:

brainly.com/question/3608737

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The diagram below illustrates a chemical equation. Chemical equations can be used to model chemical changes and show how elements become rearranged during chemical reactions. Which statement about is chemical equation is true? A. Two compounds have reacted to produce one compound. B. Two elements have reacted to produce one element. C. One compound and one element have reacted to produce one compound. D. Two elements have reacted to produce one compound.