2. How can you use mass and volume to find density of a

substance?

If the volume of an object increases but the mass stays the same, which will happen to the density?

Define dissolve in your own words

Atomic radius a. increases across a period and increases down a group. b. decreases across a period but increases down a group. c. increases across a period but decreases down a group. d. decreases across a period and decreases down a group.

Which of these products is made from an animal product? A. A sisal rug B. A silk shirt C. A linen jacket D. Cotton jeans

Given the reaction that occurs in an electrochemical cell: Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s) During this reaction, the oxidation number of Cu changes from A) 0 to + 2 B) 0 to - 2 C) + 2 to 0 D) - 2 to 0

Can humans can live without using natural resources.

Triangle PQR has vertices at P (-6,-4), Q (2,-10), and R (8,0). It is dilated about the origin by a scale factor of 5 to obtain triangle P′Q′R′.

Which of the following metals or nonmetals are expected to displace Mn or Cl (respectively) from MnCl2? 1. Cu should displace Mn. 2. Ca should displace Mn. 3. Br should displace Cl. 4. I should displace Cl.

Imagine that you have isolated a mysterious liquid from a sample of food. you add the liquid to a beaker of water and shake vigorously. after a few minutes, the water and the other liquid separate into two layers.

The development of a new experimental method is most likely to change a theory if it makes it possible to___. A. analyze samples when they are frozen B. perform the experiment in a different lab C. obtain and analyze results more quickly D.