described atoms as having a positive with electrons that have different energies at different distance from the nucleus

Scientists often deal with numbers that are either very large or very small. For example, the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 * 10-4 millimeters.

How are proteins, carbohydrates, and fats related to the discipline of chemistry?

This is not lost in a chemical Reaction (4 letter word second letter is A)

Why is aluminium more reactive than chromium, in terms of electrons?

He found out that electrons have a negative charge

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics

3.011 x 10^23 atoms F in grams

What would you use if you needed to determine the density of an object? balance and graduated cylinder balance and scale scale and spectroscope