Atomic number of helium

Why is it that when you mix salt and water togethe,"it will still be salty and wet"?

What is the substance called that is in between liquid and gas?

What's a synonym for control group

Which of the following statements provides the BEST explanation for the many chemical similarities between two elements in a Main Group? (Note: only ONE answer here.!) (a) They have similar atomic mass values.

Which of the following do scientists use to form a hypothesis?.

What resources that we use everyday

The density of aluminum is 2.7 g/ml. if the aluminum has a volume of 10 ml, what is the mass of the aluminum?

A. List three things that your body strives to keep constant. (example metabolism) B. Describe one way in which each of the items you listed in Part A could be at least temporarily disrupted from equilibrium.

Part I Complete and balance the following equation: NO-2 (aq) + Al (s) →NH+4 (aq) + AlO-2 (aq) (basic solution)

A 425.00-gram sample of a compound decomposes into 196.01 grams of carbon, 41.14 grams of hydrogen, 130.56 grams of oxygen, and 57.29 grams of silicon. Experiments have shown the compound has a molecular weight of 208.329.