Name the particle in the nucleus of an atom that adds no charge to the nucleus:

a. proton

b. photon

c. neutron

d. electron

Which element has a molar mass of 30.974 g/mol?

Which of the following is an acid-base neutralization reaction? A. Sn+2HBr-->SnBr2+H2 B. HCL+KOH---> KCL+H2O C. 2AlCl3 + 3Ca (OH) 2--> 2Al (OH) 3 + 3CaCl2 D. 2C2H6+7O2-->4CO2 + 6H2O

Does the conductivity increase or decrease? O It increases at first, then decreases. O It continuously decreases O It continuously increases O lt decreases at first, then increases

Based on the electron configuration of the two atoms, predict the ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the compound. Lithium 1s22s Chlorine 1s22s22p 3s23p5 A. 1:1 B. 1:2 C. 2:1 D. 3:1 D. 3:1

What is the mass of silver in 3.4g of AgNO3?

Objects 1 and 2 float as shown in the beaker below. Object 1 barely floats while 2 floats above surface. The density of the liquid in the beaker is 3.2 g/cc.

A 3.75 g sample of limestone, CaCO3, contains 1.80 g of oxygen and 0.450 g of carbon. What mass of calcium is present in the sample? a. 1.00 g b. 1.25 g c. 1.50 g d. 1.75 g e. 2.00 g

Some instant cold packs contain ammonium nitrate and a separate pouch of water. When the pack is activated by squeezing to break the water pouch, the ammonium nitrate dissolves in water and the pack gets cold.

Metalloids have properties of both metals and nonmetals a. True b. False

7. List things that have LOTS of kinetic energy, and tell why.