1 What is the approximate mass of a proton?

(1) 1 u (3) l g

(2) 0.0005 u (4) 0.0005 g

Give the names of the elements represented by the chemical symbols Li, F, P, Cu, As, Zn, Cl, Pt, Mg, U, Al, Si, Ne.

What Is Solubility and saturated solution?

a 45g sample of water at 12°c is heated with 15kJ of energy. What will be the final temperature of the water?

Why is it important for scientists to describe their procedures in full detail? so that they can publish their work in scientific journals so that other scientists can fully appreciate their work so that other scientists can repeat their experiments

Why does a rubbed ballon stick to a wall

Luis set a glass of ice water out side is the sunshine. when he looked at the glass 10 minutes later, the contents had changed. what kind of change happened to the ice water? A. evaperation B. conduction C. chemical change d. sudden change

A substance is considered to have a smaller surface area when ... A. it is a fine powder B. it is in large chunks C. you have a small amount of the substance D. you have a large amount of E. the substance

Which is the noble gas notation for chlorine? A-[Ne] 4s2 4p5 B-[Ne] 3s2 3p5 C-[Ne] 3s2 3p3 D-[Ne] 3p2 3p5

Is argon long hand or noble gas

Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five simplest elements, why are they rare compared to many heavier elements?