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mr Goodwill [35]
3 years ago
9

HELPPPPP ME ASAP PLISSSSS​

Chemistry
1 answer:
Airida [17]3 years ago
4 0

Answer:

25 cm3 of 0.15 mol dm-3 hydrogen peroxide

Explanation:

Not 100% with this one was a bit tricky.

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What statement is true about the eight elements on the periodic table termed metalloids?
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Answer:

They have properties of both metals and nonmetals

Explanation:

  • Elements in the periodic table may be divided into Metals, non-metals, and metalloids.
  • Metals are the elements that react by losing electrons to form stable positively charged ions known as cations. Examples are group 1, 2, and 3 elements together with transition elements.
  • Non-metals are those elements that react by gaining electrons to form stable negatively charged ions called anions. Examples include oxygen, carbon, sulfur, etc.
  • Metalloids, on the other hand, are elements that have both metallic and non-metallic properties.
  • Metalloids occur between metals and non-metals in the periodic table. Examples include Boron and silicon among others.
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A saturated solution can become supersaturated when it is cooled. The solubility of solid solutes in liquid solvents increases as the solvent is warmed up. For example, you can dissolve more sugar in warm water as opposed to cold water.

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