Which of these is an example of a chemical change?

Deflating a rubber balloon

Combining rubber with sulfur

Stretching an elastic rubber band

Erasing pencil marks from a page

When two different liquid chemical compounds at room temperature are mixed together, the beaker they are poured into is icy to the touch. What kind of reaction is this an example of? A. a fission reaction B. a combustion reaction C.

13. Base your answer to the following question on the information below and you knowledge of chemistry, A 100.-gram sample of liquid water is heated from 20.0°C to 50.0°C. Enough KCION (S) is dissolved in the sample of water at 50.

Cellular Respiration and combustion both need what gas in order to burn or break down sugars?

how many neutrons are present in each of the tree elments you idenitifed in your chosen type steel? be sure to show calculations used arrive at answer

How many electrons does strontium have to give up to achieve a noble gas electron configuration?

Are there any plans for controlling or removing zebra mussel

What is the final pressure of a system (atm) that has the volume increased from 0.75 l to 1.1 l with an initial pressure of 1.25 atm? 1.1 0.85 1.8 1.2 none of the above?

What is list of solutions

Which best explains why graphite is a good lubricant? Carbon atoms form strong bonds within each graphite layer but weak bonds between layers. Each carbon atom in graphite forms weak covalent bonds with three other carbon atoms.

What is glucose? Why is it important?