Who is correct Reggie or Charlotte?
Who is correct Reggie or Charlotte?
Reggie argues the entire chocolate-covered cookie has undergone a chemical change. Charlotte disagrees, saying only the original oatmeal cookie has undergone a chemical change, not the chocolate coating. Who is correct? Charlotte, because baking causes a chemical change, but melting objects is a non-chemical change.
When baking soda and vinegar react the surface bubbles What does this most likely indicate?
Answer. Answer: If you mix two common household items, baking soda and vinegar, a chemical change occurs. During the process, the bubbles that you see are molecules of carbon dioxide gas being produced.
What should never be done when balancing a chemical reaction?
When you balance an equation you can only change the coefficients (the numbers in front of molecules or atoms). Coefficients are the numbers in front of the molecule. Subscripts are the smaller numbers found after atoms. These cannot be changed when balancing chemical equations!
What are coefficients you could use in a balanced equation?
Coefficients are used to balance chemical equations. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. For example, two molecules of hydrogen would be written as 2H2.
What kind of reaction is 2 c2h2 5 O2 → 4 co2 2 h2o?
Any organic molecule reacting with oxygen to produce water and carbon dioxide is a combustion reaction. We also see from the RxN that is is a double replacement reaction.
What is the mole ratio of CO2 to h2o?
The chemical formula tells us the mole ratio. CO2 = 1 CO2 molecule : 1 C atom : 2 O atoms. 1 Cmolecule: 12 O2 molecules : 12 CO2 molecules : 11 H2O molecules.
What type of reaction is p4/5 O2 → 2 P2O5?
Type of Chemical Reaction: For this reaction we have a combination reaction. Balancing Strategies: This combination reaction is a lot easier to balance and if you can get an even number of oxygen atoms on the reactants side of the equation. You can do this by multiplying the diphosphorous pentoxide (P2O5) by two.
What reaction takes place in the presence of oxygen and produces carbon dioxide and water?
Cellular respiration