Question 2. Which of the following is a compound?

a) Stainless steel

b) Bronze

c) Graphite

d) Hydrogen sulphide

Which of the following is a physical change A copper roof changing colors from orange to green Sawing a piece of wood in half Rust forming on an iron fence Burning a piece of wood

What is quanta (keep it very simple)

How many grams of HCl would be required to make 0.3 L of a 12.0 M solution? A. 25 g B. 146 g C. 131 g D. 40 g

Which way will the equilibrium shift if you ... cool it to a low temperature?

How do compression and expansion affect the density of gases?

Which of the answer choices best describes how electrons move, according to modern atomic theory? They vibrate in place. They move like planets. They move in orbitals. They slide past each other.

The total solute concentration of a red blood cell is about 2%. Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. Which of the following solutions will cause a red blood cell to shrink? a.

A geologist discovered fossils of marine animals in a layer of sedimentary rock in the desert. Based on this discovery, what conclusion can the geologist draw?

How do metals form chemical bonds with other metals?

Maple syrup has a density of 1.325 g/ml, and 100.00 g of maple syrup contains 67 mg of calcium in the form of ca2 + ions. what is the molarity of calcium in maple syrup?