CHEMISTRY MIDDLE SCHOOL

Which of the following lists contain only elements?A. air, iron, iodine, magnesium.
B. zinc, gold, aluminium, oxygen.
C. nitrogen, copper, mercury, water.
D. Chlorine, argon, sodium, limestone.

Answers

Answer 1
Answer:

A list that contains only element is option B which include zinc, gold, aluminum, and oxygen.

What is a Chemical element?

A chemical element may be defined as a type of simple substance that significantly cannot be broken down or fragmented into smaller parts or changed into another substance.

The basic part of an element is an atom, which contains subatomic particles like protons, neutrons, and electrons. All atoms of an element have the same number of protons. In list A, the air is not an element, in list C, water is not an element, in list D, limestone is not an element. While list B includes all elements like zinc, gold, aluminum, and oxygen.

Therefore, a list that contains only elements is option B which includes zinc, gold, aluminum, and oxygen.

To learn more about Chemical elements, refer to the link:

brainly.com/question/28376204

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Answer 2
Answer: In which elements are belonging to? I will grant that option B ; ti's the best answer.
                 In which thou might contain the elements zinc , gold , aluminium , and last by not least oxygen.

I truly hope ti's answer helps thou. 

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Answers

YES

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The law of conservation of energy states energy cannot be destroyed nor created. Instead, it just transform from one form to another. 

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Answer:

what they said

Explanation:

What might be a long term benefit for the nation from space exploration. A. Taxes will be slower. B. More people will be interested in studying science. C. More science fiction movies will be made. D. More people will become famous

Answers

B. sounds like the most reasonable answer. 
With an increase of people studying space exploration and sharing their discoveries, then it is likely for it to inspire other people in study science as well.

What are three factors that influence the rate of urine production

Answers

Answer:

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Is popping popcorn a physical or chemical change? Explain your answers.

Answers

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3. Mr. Hill has 27 students in his classand Mr. Chang has 24 students in his
class. Both classes will be divided into
equal sized teams within their own
classes. What is the greatest number of
students that can be on team so that all
the teams are an equal number?​

Answers

Answer: the answer for mr hills class is 13 and the answer for mr chang is 12

Explanation: The thing that i did was just divide the numbers by 2 and the number is how many teams can be formed at once in both classes

Just dived both numbers by two

What does energy transformation mean

Answers

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