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yanalaym [24]
3 years ago
5

What chemical is discovered to react to light in the 1700s?

Chemistry
2 answers:
WARRIOR [948]3 years ago
5 0
When Scheele discovered oxygen he called it "fire air" as it supported combustion. The answer is oxygen.
leonid [27]3 years ago
4 0
Oxygen or maybe hydrogen
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Does chocolate milk come from brown cows?
ss7ja [257]
Chocolate milk is just regular white milk that has chocolate syrup/powder mixed into it
So no, chocolate milk does not come from brown cows

Hope this helps
4 0
3 years ago
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Please help This is for my chemistry class and I need to get it done but I’m lost and need answers
Vanyuwa [196]

Answer:

chlorine is a non metal.

sodium is a alkali metal.

helium is a noble gas.

nickel is a transition metal

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2 years ago
Explain why copper is used for the<br> roofs of some buildings and magnesium is not.
Scrat [10]

Answer:

Because of the less reactivity of copper.

Explanation:

As well as being resistant to the elements and thereby less likely to be affected by rainfall, hail, and mildew than other types of roofing, copper is also one of the most fireproof materials available. Copper is also highly resistant to thermal changes and thereby doesn't deteriorate quickly.

Magnesium would also corrode PDQ. Magnesium sheeting would also pose an unacceptably high fire hazard.

3 0
2 years ago
30. a. How do the properties of metals differ from those
Ahat [919]

Explanation:

Metals are elements that ionized by loss of electrons.

Ionic and molecular compounds are usually non-metals.

Properties of metals:

  • Metals have free mobile electrons and the metallic bonding ensures that.
  • They are usually electropositive and freely looses their electrons.
  • None of the metal is soluble without a chemical change occurring.
  • They are ductile and malleable.
  • Metals are good conductor or heat and electricity in their free uncombined state.
  • They are lustrous.

B. The specific property of metals accountable for their unusual electrical conductivity is due to the presence of free mobile electrons in their lattices.

learn more:

Metals brainly.com/question/2474874

#learnwithBrainly

3 0
3 years ago
What type of bonding exists between the carbon atoms to create diamond ?
Step2247 [10]

Answer:

Covalent bonds.

Explanation:

Diamond is organized in a giant lattice structure with strong covalent bonds between carbon atoms. Each carbon atom forms 4 bonds. Explanation: Each carbon atom has four electrons in its outer shell, all of which form covalent bonds that are strong and hard to break.

5 0
3 years ago
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