Sodium forms an ion with a charge of_

a. 1+

b. 1-

c. 2+

d. 0

Which is the best metal to use in an alloy to increase its electrical conductivity

Which of the following was most clearly, even uniquely perhaps, revealed by the discovery of the photoelectric effect? 1. the Heisenberg Uncertainty Principle (the indeterminate, probabilistic character of nature) 2. energy/quantization 3.

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

Geometry and polarity of SnCl2

Do all colors fade at the same rate

If methyl orange is added to a substance and it turns the substance red, what does this tell you about the pH of the substance? Would this substance be an acid or a base?

Why a preservative not added when preparing non aqueous drug solution?

What is earths surface made of?

What is the velocity of a wave with a wavelength of 0.03 m and a frequency of 120 Hz?

Momentum is a measure of the mass motion force or weight of an object