Question

Does anyone have the energy conservation quick check answers?

Answer 1

1) Freezing is exothermic because as water bonds into ice, the energy from bond formation is released and heats up the surrounding environment.
2) When a fire is burning, chemical energy is turned into visible energy in the form of light and thermal energy in the form of heat.
3)A burning fire is exothermic because a lot of heat is given off as the wood is converted into carbon dioxide and water.
4) Energy is never created but simply recycled and changed into other forms.
5) all parts combined

I just took it and well I was looking for the answer just like ya are and I came across this site and well I was not happy that there were no answers to the check so I have to do onto others that you would want to be done onto you so your welcome. I would like lots of thumbs up in the replys as thanks.

Answer 2

100% thank you

Answer 3

your welcome

Answer 4

Everything was correct except 5 for me the correct answer is, The gasoline and spark.

Much thanks to ty bone though

Answer 5

1. Freezing is Exothermic because as water bonds into ice the energy from bond formation is released and heats up the surrounding environment.
2. When fire is burning, chemical energy is turned into visible energy in the form of light and thermal energy in the form of heat.
3. A burning fire is exothermic because a lot of head is given off as the wood is converted into carbon dioxide and water.
4. Energy is never created but simply recycled and changed into other forms.
5. The gasoline and spark.

Answer 6

Why is mine so different? 💀uhhh what the heck

What does the Law of Conservation of Mass state?
1.) Matter is neither created or destroyed in a chemical reaction, only rearranged.
2.) The total mass of reactants prior to a chemical reaction is greater than the mass of the product due to the release of energy.
3.) The total mass of all of the reactants prior to a chemical reaction must equal the total mass of all the products after the reaction.
4.) Matter cannot be rearranged during a chemical reaction.

If the mass of elements before a chemical reaction is 30 grams, after the chemical reaction, the mass will be ___.
1.) 30 grams
2.) 28 grams
3.) 0 grams
4.) 32 grams

78g of potassium (K) react with 71g of chlorine (CI) to produce potassium chloride. According to the Law of Conservation of Mass, what is the mass of the product (2KCI)?
1.) 156g
2.) 2g
3.) 149g
4.) 4g

2 grams of potassium (K) reacts with 5 grams of Oxygen (O). According to the Law of Conservation of Mass, how many grams of potassium oxide (K2O) will be produced?
1.) 5 grams
2.) 7 grams
3.) 10 grams
4.) 2 grams

Which of the following equations demonstrates the Law of Conservation of Mass?
1.) CH + O2 —> CO2 + H2O
2.) CH4 + O2 —> CO2 + HO
3.) CH4 + O2 —> C + 2H2O
4.) CH4 + O2 —> CO2 + H2O