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2 years ago

Which of the following is a clue of a chemical change?

1 answer:

3 0

The changing of the colors of the iron when it is heated is an example of the physical change. When the iron is heated, the electrons gets excited and move to higher energy shells.

The formation of the gas bubbles in the boiling water is also an example of the physical change as no chemical reaction has taken place.

When the melted wax is poured into ice, the melted wax is formed. This is also an example of physical change, as just the state of the wax has changed.

When vinegar and baking soda are mixed, a chemical reaction takes place, which leads to the formation of the carbon-dioxide gas. This is an example of chemical change.

Hence, the answer is 'option D'.

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Are these right???

Dennis_Churaev [7]

My answers would be as follows:

1. The humanistic approach emphasizes __________ in development and behavior.

-free will

2. which humanistic theorist developed a hierarchy of needs?
-Abraham Maslow

3. Another way to characterize humanistic psychology is its emphasis on _________.
-the self

4. Which of the following is primary, or must be met first, in Maslow’s hierarchy?
-physiological needs

5. Using you prior knowledge about developmental theory as a guide, which of the following best supports Maslow's assertion that love is a need that is essential to survival.
-Without the opportunity for “love” in the form of contact comfort, people are unable to form attachments, often lead difficult, maladaptive lives, and sometimes fail to thrive at all

Hope this helps. Have a nice day.

4 0

3 years ago

Read 2 more answers

What is one of the principal chemical compounds that living things use to store energy

arlik [135]

Answer:

ATP or Adenosine triphosphate is the chief compounds which are used by the living things to store energy.

Explanation:

ATP is the compound that captures the chemical energy released through the degradation of food. It stores the captured energy and releases it at the time of need experienced by the organism.

It is made up of adenine, ribose sugar, and a phosphate group. It is produced in a cell organelle called mitochondria through a process called respiration.

6 0

3 years ago

The cells that develop to form the outer lining of an animal's body make up the _[blank]_.

Radda [10]

Answer:

The answer is ectoderm. The mesoderm is the middle layer of lining. The endoderm is the innermost layer. You can remember it by:

Endo/ sounds like inner

Meso/ M for middle

Ecto/ sounds like exo, bugs have exoskeletons that are on the outside.

Explanation:

4 0

3 years ago

Apply Research has shown that if a prescribed dose of an antibiotic is not taken completely , some bacteria might not be killed

dusya [7]

Answer:

Through natural selection the disease gain immunity to the antibiotic.

Explanation:

As the antibiotic kills off the members of the population that are not resistant, leaving only the resistant members. These members then reproduce, passing the immunity to their offspring, causing the population to become immune.

3 0

2 years ago

The image shows a magnified view of a leaf's surface with the stomata visible. What’s the significance of these structures in th

laiz [17]

Answer:

The correct answer is option C. They absorb water vapor from the atmosphere, providing water to the plant for photosynthesis.

Explanation:

Stomata are small opening present on the lower side of leaf. Its main function is to exchange of gases that are required for the process of photosynthesis. During day time, stomata are open and carbondioxode which is a raw material used for the production of glucose is absorbed from air and oxygen is released in the atmosphere.

5 0

2 years ago

Read 2 more answers