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e-lub [12.9K]
3 years ago
5

Aurelia dropped a piece of metal into a beaker, and then she added acid to it. She saw colorless bubbles rising from the metal.

The metal began to turn black. What type of change did Aurelia see?
Chemistry
2 answers:
Andrew [12]3 years ago
5 0

Answer:

chemical, because a new gas was formed

Explanation:

that was the answer on study island :/

timofeeve [1]3 years ago
4 0

Answer:

Chemical change

Explanation:

From all indicators, Aurelia is seeing a chemical change occurring in the reaction here.

A chemical change is a change in which new substances are produced. For every chemical change:

  • they are not easily reversible
  • they lead to production of new kinds of substances
  • involves mass change
  • require considerable amount of energy.

We start off and end with:

         Metal   +     Acid →     Black metal     +    rising gaseous bubbles

Clearly, it is shown that new products are formed and this reaction is impossible to reverse in order to get the reactants back.

This is a typical chemical change.

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3 years ago
A line is perpendicular to<br> y = -3x – 9<br> What is the slope of this<br> perpendicular line?
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In the picture- D. 4

Explanation:

The product of the gradients of perpendicular lines =-1

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3 years ago
Read 2 more answers
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