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djyliett [7]
2 years ago
7

Which of these is an example of a chemical change?

Chemistry
2 answers:
egoroff_w [7]2 years ago
8 0

A. Fireworks exploding is the answer

slavikrds [6]2 years ago
7 0

Hey There,

Your answer is A) Fireworks exploding

This is an action of chemical change. Grinding powder, melting cheese and ironing a shirt are all action of physical change. You are just changing their form, not performing a chemical change. When fireworks explode, a chemical inside of them changes.

Best Of Luck,

- I.A. -

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6 0
3 years ago
Calculates the equivalent mass of calcium chlorate CA (CI03) 2
love history [14]

Answer:

207g

Explanation:

Given compound:

            Ca(ClO₃)₂

The equivalent mass can be derived by summing the molar masses of each atom

  Molar mass of Ca = 40

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Now solve;

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3 0
2 years ago
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7 0
3 years ago
Please help me please it's urgent​
alisha [4.7K]

Answer:

<h2>Paraphrase this! I got this online!</h2>

1.A a Chemical Reaction is a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

1.A Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules)

1A.Chemical bonding, any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world.

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3D.Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and is said to be exothermic. ... Most reactions are exothermic.

<h2>Paraphrase this! I got this online!</h2><h2>Paraphrase this! I got this online!</h2><h2>Paraphrase this! I got this online!</h2>
3 0
3 years ago
An asteroid in space has traveled 4,500 km in 60 s, what is the average speed of the asteroid?
weqwewe [10]
The average speed is 75 Km per hour. Remember the equation for speed is Speed = Distance divided by Time
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