Is burning bread a chemical or physical change

What issue does the designer most likely need to improve in order for the dishwasher to be a good product to sell

Which of these is not biomass energy source? A. wind B. manure C. garbage D. lumber

How many moles of O2 are counsumed if 20 moles of SO2 are Produce

What is the simplest for 2/6

4. Describe how mathematics and science are related.

02:Matter and Change What is one difference between a mixture and a compound? A. A compound can only be separated into its components by chemical means. B. A compound consists of more than one phase. C.

Charlotte is planning an investigation to learn how temperature affects the amount of salt that can be dissolved in a liquid. In Charlotte's experiment, which of the following things should she control, or keep the same? A. the type of liquid used B.

Which property ofsulphuric acid makes it suitable to use as a catalyst for the preparation of esters?

Which is an example of a covalent bond? Chlorine accepts an electron from calcium to form a stable bond. Ions in a bar of pure iron are surrounded by a large number of valence electrons.

Which frequency has more energy? (high frequency or low frequency)