What was the first particle discovered inside an atom

Why did Boyle think that chemistry was the key to understanding?

Which field of science studies the composition and structure of matter? a. physics c. chemistry b. biology d. geology

A one or two letter abbreviation for a chemical element. True or false

The atomic number of an element best corresponds to which of the following? O The mass of an atom of that element. O The number of electrons orbiting the nucleus of an atom of that element.

Which two elements in the periodic table have the same number of electrons in their outer orbitals?

What is the difference between the angle of deviation of the alpha particles closer to the nucleus and that of those that are further away? What is the reason for this difference?

Write the balance equation for Zn (NO3) 2 (aq) + NaOH (aq) 

How many moles of solid chromium can be deposited from a crcl3 solution when a steel wrench is electroplated with a current of 3.0 amps for 965 seconds? do this without a calculator?

The brass cube has a mass of 67.2 grams. Each side is 2 cm long. What is the density of the brass cube? A) 2.8 g/cm 3 B) 3.15 g/cm 3 C) 8.4 g/cm 3 D) 9.45 g/cm 3

Chili can be made using ground meat or chunks of meat Which would you choose if you were in a hurry? Explain.