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ZanzabumX [31]
3 years ago
6

Answer plsssss I’m dumb

Chemistry
1 answer:
aev [14]3 years ago
4 0

Answer:

bottom middle

middle top

top bottom

Explanation:

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Yeast cells thrive on ice cold water *<br> True<br> оо<br> False
NemiM [27]

Answer:

TRUE

Explanation:

7 0
3 years ago
When a piece of zinc metal is carefully placed in a beaker of strong acid, bubbles form on the surface of the metal and begin to
kati45 [8]

Answer:

A.  a new substance is being produced.

Explanation:

The bubbles most likely indicates that a new substance is being produced by this reaction. In essence, we describe this sort of change as chemical change.

In a chemical change, new substances are usually produced. They are accompanied by the evolution or absorption of energy.

The reaction of Zinc with a strong acid to produce bubbles on the surface of the metal indicates a chemical change and the formation of a new kind of substance.

Take for example, let zinc reacts with hydrocholoric acid, HCl;

   Zn         +      2HCl      →    ZnCl₂     +     H₂

Since Zn is higher than Hydrogen in the activity series, it will displace it from HCl and liberate hydrogen gas as a product. This will cause the bubbles observed in the reaction.

This is a chemical change and new products have been formed.

B and D are wrong because they are both physical changes.

C is wrong because no information about such is provided by the problem statement.

So, when a piece of zinc metal combines with a strong acid, a new kind of substance is produced.

8 0
3 years ago
Take a close look at this diagram on the slide which form of government is represented by this diagram
Allushta [10]
Which diagram? There isn’t any there lol
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Polymerization is the process of linking smaller molecules to form long chains of higher molecular weight. True or False
quester [9]
True is correct answer.


Polymerization is the process of linking it has a smaller molecules to form has a long chains of higher molecular weight.

Hope it helped you.

-Charlie
6 0
3 years ago
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Answer:B

Explanation:

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