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Natasha_Volkova [10]
3 years ago
8

I will brainly And 5 star rate!!

Chemistry
2 answers:
ElenaW [278]3 years ago
8 0
One or more substances are converted to a different substance. an example could be ( iron + oxygen = rust
xeze [42]3 years ago
3 0
Most of them explode is the answer to that question
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Among the elements listed, which would show the largest increase between the second and third ionization energies and why?
Yuri [45]
Ionization energy increases from left to right in the row and from bottom to top in a column. Also as we get closer to the nucleus it would be harder to take electrons out. B  (atomic #5) has 2 layers of electron 2 and 3 atom in each layer. P has 15 so it would be 2,8 and 5 respectively. Ca is 20 so 2,8,8,2 and Zn is 30 and it would be 2,18,8,2.
For energy between second and third ionization we are looking at taking out the 3rd electron. B already has 3 electron in the first layer so its easy to take them all. P has 5 in the last layer so again easy. But when we look at Ca and Zn after the 2nd electron (in the last layer) we should change the layer go one layer inside. So this needs more energy. To pick between Zn and Ca (they are in the same row)  I mentioned earlier that in one row as we go to the right ionization energy increases so the answer is Zn. 
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3 years ago
What’s the symbol of the element that has 8 protons, 9 neutrons, and 8 electrons
Katena32 [7]

Answer:

oxygen

Explanation:

 The given isotope has 8 protons and 8 electrons, so the atomic number of the given isotope is 8, which is the atomic number of oxygen.

7 0
3 years ago
Isabel needs an image to represent the carbon cycle for a presentation in her science class. She has the following diagrams to c
den301095 [7]

Answer:

Its B

Explanation:

Its pretty easy. Im three days late my bad my guy

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3 years ago
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The checkmarks on thus picture indicating the __________________ factors of an ecosystem
kvasek [131]

Answer:

We need the picture to answer the question

Explanation:

but i did do this test and number 4 was biotic and number 5 was abotic hope this helped

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What is a compound?
Alja [10]

Heterogeneous mixture

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