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svlad2 [7]
3 years ago
6

7th grade Sem 1

Chemistry
2 answers:
Murrr4er [49]3 years ago
4 0

Answer: Water

Explanation: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil

Vlad1618 [11]3 years ago
3 0
The answer is a water.
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Ripening is a _______________ and spoiling is a ______________.
Mazyrski [523]

Answer:

A

Explanation:

The answer to this question is A. Both ripening and spoiling are chemical reactions.

Spoiling is a chemical reaction because spoiled food has bad smell and taste and it changes colour too.

Ripening of fruits is a chemical change. For example the colour could change as well as the texture.

7 0
2 years ago
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How does the reactivity of nonmetals change as you move from left to right across the periodic table?
Rudiy27

Answer:

Metallic character refers to the level of reactivity of a metal. Non-metallic character relates to the tendency to accept electrons during chemical reactions. Metallic tendency increases going down a group. Non-metallic tendency increases going from left to right across the periodic table.

Explanation:

I hope this helps :)

4 0
3 years ago
Can reactions be more than one of the five types
ehidna [41]
Yes you can it will not just have 5 :)

3 0
3 years ago
Which answer choice lists the number and type of elements in a compound in the way that is close to their actual arrangement?
alexandr1967 [171]

The chemical formula of a compound express the atoms by which the molecule is formed and the ratio of the atoms in which they are combined.

The space filling model of a compound describe the electron density in the compound of each atom.

The ball and stick arrangement of a compound describe the way in which the molecules are present in three dimensions.

The structural formula state the number of atoms present in the molecule, the type of element or atom present in the molecule and the way in which they are arranged closely which is the bond.

Thus only the structural formula only will cover all the options as stated.

6 0
3 years ago
Would someone mind helping me? I really need this answer but I'm so confused. I would appreciate any help :) and if you get the
Svetllana [295]

Answer:

A

Explanation:

liquids thake the shape of what holds them so shape is changing and volume is the same

7 0
3 years ago
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