CHEMISTRY MIDDLE SCHOOL

What moderates the temperature on Earth ? A. cities B. deserts C. the oceans D. mountainous areas

Answers

Answer 1
Answer: Oceans help moderate the temperature of the earth
Answer 2
Answer:

Answer:

THE ANSWER IS THE DESERTS IF UR DOING USATESTPREP HINT THINGY

Explanation:

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How are chemical changes of matter related to the organization of the periodic table

Answers

Chemical changes of matter are related to electronic configuration which is same along a group in case of valence shell in the periodic table.

What is periodic table?

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.

Learn more about periodic table,here:

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The elements are organized in groups, and the groups have the same chemical properties, therefore having similar chemical changes. 

Is crumpling a piece of paper chemical changes

Answers

No, because you are not changing the chemical make-up of the paper

Answer:

No, it would be a physical change, as the crumpled paper is still paper. There was no chemical reaction. An example of chemical change would be burning paper, as it turns to smoke and ashes.

List three evidences of physical and chemical change. ( If you know only one or two please write them anyways please)

Answers

Physical: ripping paper, braking a stick, cake batter mixing

Chemical: burning paper, spoiled milk, a penny turning green

What is the difference between relative humidity and humidity?

Answers

Relative humidity tells you how much water vapor is in the area. Humidity is like a ratio of absolute humidity and the potential amount of water saturation that may be in an area.

Humans are protected from some infection by specialized cells which produce chemicals that

Answers

Humans are protected from some infection by specialized cells which produce chemicals that recycle nutrients.

Which is and element
A) Salad
B) Sugar
C) Water
D) Potassium

Answers

Answer:

the only element above is potassium
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One city is at a higher latitude than another city. How does this make the two climates different?
Henry divides 1.060 g by 1.0 mL to find the density of his water sample. How many significant figures should he include in thedensity value that he reports?
1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?
Which processes result in the release of carbon? Select three options.Animals break down food molecules to obtain energy. The remains of producers are broken down by decomposers. The remains of consumers are broken down by soil decomposers. Producers take in carbon dioxide. Producers make sugars and starches.