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Naya [18.7K]
3 years ago
10

A chemical change involves a change in ________. A chemical change involves a change in ________. phase the elements of a molecu

le how atoms are bonded all of the above
Chemistry
1 answer:
Firlakuza [10]3 years ago
4 0

Answer:

All of the above.

Explanation:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

This process is not reversible and a change of energy that is sometimes heat is given off.

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Which action is a change in state
Mariana [72]

Answer: condensing

Explanation:

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3 years ago
Carbon dioxide and water vapor are variable gases because
ehidna [41]

Answer:

Their amount is not consistent at all parts of the atmosphere

Explanation:

Carbon dioxide and water vapor exists as variable gases in the atmosphere because their amount varies from one part to the other.

  • The abundance of variable gases is influenced strongly by activities from the surface.
  • This variability occurs a result of the contribution from from life activities on the  surface.
  • Also, due to properties of the gases, they are not evenly distributed.
  • At certain altitudes, the amount of water vapor can be low.
7 0
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Complete the equation Fe + HOH = ?
Sav [38]
Fe+2HOH=Fe(OH)_2+H_2. Iron is divalent to hydrogen and water.
7 0
4 years ago
Read 2 more answers
A lead atom has a mass of 3.14 x 10 to the negative 22nd g.How
frozen [14]

Explanation:

The given data is as follows.

       Mass of a lead atom = 3.14 \times 10^{-22}

       Volume = 2.00 cm^{3}

        Density = 11.3 g/cm^{3}

As it is mentioned that 1 cubic centimeter contains 11.3 grams of lead.

So, in 2 cubic centimeter there will be 2 \times 11.3 g = 22.6 g of lead atoms.

One lead atom has a mass of 3.14 \times 10^{-22}. Therefore, number of atoms present in 22.6 g of lead will be as follows.

                \frac{22.6 g}{3.14 \times 10^{-22}}

                  = 7.197 \times 10^{22} atoms

Thus, we can conclude that there are 7.197 \times 10^{22} atoms of lead are present.

4 0
3 years ago
How are elements arranged on the periodic table?
aleksklad [387]

Answer: They are arranged by atomic number.

3 0
3 years ago
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