When most large food molecules are heated, they:

A. boil

B. melt

C. bond with each other

D. form entirely different molecules

A polymer contains monomers linked by a. covalent bonds b. ionic bonds c. polyatomic bonds d. hydrogen bonds

What is reduced in the reaction Mn + HCl → MnCl2 + H2? 1. chlorine in HCl 2. This is not a redox reaction. 3. manganese 4. hydrogen in HCl

Why might you only see a rainbow when rain is in front of you

A double covalent bond involves two atoms sharing two electrons? True or false

Compare and contrast the properties of metals, metalloids, and nonmetals. Identify groups and sections of the periodic table by group name and common properties.

Only producers perform ... A) photosynthesis B) respiration C) both A & B D) neither A or B

A steel cylinder containing 25 kg of CCl2F2 in the form of liquid and vapor is set outdoors on a warm day 25 degrees celsius. What is the approximate pressure of the vapor in the cylinder?

Which of these observations would be classified as a physical property A:lemon juice cleans a penny B: A candle burns brightly C: baking soda in vinegar forms bubbles D: a cube of gold is hammered into a thin sheet

Target tissues of hormones are always near the glands that release the hormones. true or false

What four things affect the tides