Which of the following elements has both metallic and nonmetallic properties?

A. Ar

B. Ge

C. Mg

D. S

Wear sanitized safety glasses or goggles during lab set up hands on activity and takedown

How energy is needed to raise the temperature of 54.1g of water from 22.4 heat of liquid water is 4.184

What are some expirements to determine if a compound is covalent or ionic?

When hydrogen chloride ionizes in water, which reactant is the proton donor? chlorine which reactant is the proton acceptor? hydrogen?

Which of these would be caused by a chemical change? A) The formation of lava. B) Sedimantary rock layering over time. C) Metamorphic rock forming from igneous. D) Metamorphic rock eroding to form sedimentary rock.

Should a bartender use ice and scoop directly from ice machine or use an ice holding device and scoop to make drinks and refill drinks from

What classification should this reaction have? 4Al + 3O2 → 2Al2O3

If you start with 100 grams of a radionuclide, how much will you have after two half-lives have passed?

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?