What microscope would be appropriate for looking at the shed exoskeleton of a tarantula?
O Transmission electron microscope
O Light microscope
O Scanning electron microscope
O Dissecting microscope

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Look at the photo of the leaf. which term best describes this leaf?