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skad [1K]
2 years ago
9

What criteria are used to distinguish between a chemical change and a physical change

Chemistry
1 answer:
Marat540 [252]2 years ago
3 0
If the ending substance has changed its properties. For example if iron rusts it is a chemical change because it is no longer the same as before it is now just rust. A physical change only changes the appearance but burning something or changing it's chemical properties is a chemical change. 
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pashok25 [27]
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6 0
3 years ago
What does contact forces and non-contact forces mean?
Dmitrij [34]
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8 0
3 years ago
A burner on a stove produces temperature. thermal energy. hotness. fire energy.
Aleksandr [31]

Question:

The options are;

a. Temperature

b. Thermal Energy

c. Hotness

d. Fire Energy

Answer:

The correct option is;

b. Thermal energy

Explanation:

A burner on a stove produces thermal energy which is used to raise the temperature of the metal container (kettle, pot or pans) in which items are placed for heating.

Thermal energy is the internal energy of the system given off as heat which when transferred from one body to another causes the temperature of the receiving body to rise. Thermal energy in a burner is given off when the gaseous fuel reacts or burns in the presence of or with oxygen to produce carbon dioxide and water vapor in an exothermic reaction.

4C + 5H₂ + 13/2O₂ (-125 kJ) → C₄H₁₀ + O₂ → CO₂ + H₂O (-2877 kJ).

4 0
3 years ago
Read 2 more answers
A bucket of water contains 5.45 L of water, how many mL of water is this ?
nalin [4]
Answer: It is 5450 mL


Explanation: There are 1000 mL in every L and then there is an extra 450 so just add that at the end
6 0
3 years ago
Energy released from cell respiration is know as
never [62]
Energy released from cell respiration is know as ATP
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2 years ago
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