Which of the following is a false statement about reactions? a. mass can’t be created or destroyed in a chemical reaction b. compounds that fork have different properties than the ‘old’ reactants. c. atoms are rearranged in a reaction and joincto form new molecules d. when a reaction gets cold, that means energy is destroyed

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils