Sonya reads the element riddle below.

I am shiny. I form + 1 ions. There's more!

I am the most reactive metal in Period 4.

Who am I?

Which element is the answer to the riddle?

krypton

potassium

sodium

bromine

Which structure is found in plant cell but not in an animal cell? A) cell wall B) cell membrane C) cytoplasm D) nucleus

What is the pH of an aqueous solution with the hydronium ion concentration : [H3O+] = 6.3 x 10-6 M?

When a steadily flowing gas flows from a larger-diameter pipe to a smaller-diameter pipe, what happens to (a) its speed, (b) its pressure, and (c) the spacing between its streamlines?

Which are examples of dynamic equilibrium? Check all that apply. A cooking pot left under a dripping faucet eventually fills with water and overflows. A person's bank account balance remains constant because income and expenses are equal.

What is the chemical composition for diet sodas?

A graduated cylinder is filled to the 40.00-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966 g and 159.446 g, respectively. In a separate experiment, a metal ball bearing of mass 18.

Which element in Group 15 has the greatest metallic character? 1) N 2) P 3) Sb 4) Bi

Choose the statement below that is TRUE. A solution will form between two substances if solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions.

When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Witch substance represents the precipitate? Silver nitrate silver chloride sodium chloride sodium nitrate

The summer season at Arica and Rio de Janeiro Occurs from approximately