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77julia77 [94]
3 years ago
5

Need help with these problems

Chemistry
1 answer:
jeka943 years ago
5 0
16. A
17. B
18. B
19. B
20. A
21. B
22. A
23. D
24. C
25. D
26. A
27. B
You might be interested in
What force opposes the electromagnetic force in the atom?
rjkz [21]

Answer:

The strong forces oppose the electromagnetic force of repulsion between protons. Like ”glue” the strong force keeps the protons together to form the nucleus. The strong forces and electromagnetic forces both hold the atom together.

Explanation:

Hope This helps

7 0
2 years ago
Read 2 more answers
(b) (i)
Leya [2.2K]

Answer:

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons

8 0
3 years ago
Given the unbalanced equation which represents aluminum metals reacting with an acid:
Alona [7]

There are three number of electrons lost by 1 mole of aluminium because aluminum has +3 charge on it.

<h3>What is cation?</h3>

When an atom loses electron, positive charge appears on the atom this is called cation. In this reaction we can see that aluminium has +3 charge which means that it loses 3 electrons.

So we can conclude that There are three number of electrons lost by 1 mole of aluminium because aluminum has +3 charge on it.

Learn more about electron here: brainly.com/question/23390564

#SPJ1

7 0
2 years ago
Help!!<br> Classify each diagram as an element a compound or mixture
Black_prince [1.1K]

Answer:

1. Mixture

2. Compound

3. Compound

4. Element

Explanation:

Number 1 shows two completely different types of compounds in the same space, so it is a mixture.

Numbers 2 and 3 are compounds because there aren't different types compounds as in Number 1, but the same compound repeated. 2 is a compound because while all of the circles are the same element, they are connected. O2 for example, oxygen, is a compound.

Number 4, finally, is all of the same substance, non-connected, so it shows an element.

Brainliest, please :) (Trying to become a genius so that I can continue helping more people)

8 0
2 years ago
Would a salt-cured egg be a physical or chemical change?
Vera_Pavlovna [14]

Answer:

I believe it is a physical change

Explanation:

The telltale sign of a chemical change is the formation of a new substance. They also usually involve the production of energy (heat, light, sound etc.)

5 0
3 years ago
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