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uranmaximum [27]
3 years ago
15

Are all these physical changes Tear Mix Squeeze Divide Cook

Chemistry
2 answers:
malfutka [58]3 years ago
6 0
No, cook is not a physical change, it's chemical
Studentka2010 [4]3 years ago
4 0
Cook is not because heat is applied and it changes from one form to another
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1#
Black_prince [1.1K]

Answer:

1= Magnesium

2 = Option 3 =  1s² 2s² 2p⁶

Explanation:

An electrically neutral atom consist of equal number of protons and electrons.

The answer for 1st q is magnesium because the electronic configuration showed twelve number of electrons. The atomic number of magnesium is twelve that's why this configuration is of Mg.

Mg₁₂ =  1s² 2s² 2p⁶ 3s²

The second answer is option three because has atomic number ten and third electronic configuration have ten electrons.

Ne₁₀ = 1s² 2s² 2p⁶

It is stable electronic configuration. Neon is inert because of this electronic configuration. The outer most shell is completely filled.

8 0
3 years ago
Endothermic or exothermic
yanalaym [24]

Answer:

endo takes energy in and exo releases it out

Explanation:

3 0
3 years ago
What is a horizontal row of elements on a periodic table
Mariulka [41]

They are called Periods. Lesser known as series

3 0
2 years ago
Read 2 more answers
What is the beta decay of uranium-237
Airida [17]
During a phenomenon called beta decay the neutron of the isotope uranium 237 emits/releases an electron causing an increase of atomic number. With the reference of a periodic table the "new" element is Neptunium or Np-237. 
3 0
3 years ago
Why does the earth rotate
boyakko [2]

Answer:

A

Explanation:

Your answer would be A because Earth is formed from cold gases collapsing due to gravity. The Solar System was formed when a huge amount of dust and gas began to collapse under its own gravity, and as the cloud collapse it started to spin causing the material within the cloud to gather into a swirl and then formed into planets and as the planets are formed they kept this spinning motion.

4 0
3 years ago
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