Our understanding of the atom has changed over time wich idea that was once accepted that is now considered scientificaly unaccurate

How many electrons can be held in the innermost energy level of atoms

Several narrow linear bloodstain patterns are found on a wall adjacent to one where a body was found the droplets were elongated and about 1-4 mm in diameter which weapon most likely caused this blood spatter pattern A) Brass knckles on a fist B)

If you were a scientist, why wouldn't you use "sour taste" to identify a compound as acidic?

Astrology is pseudoscience. What can you conclude about the claims made by astrology

3. Explain the following giving examples (a) Saturated solution (b) Pure substance (c) Suspension

A certain shade of blue has a frequency of 7.02 * 1014 Hz. What is the energy of exactly one photon of this light?

How are the atomic number and the number of protons related to each other? how do the number of protons, number of neutrons, and the mass number relate to each other?

What are water and carbon dioxide in the cellular respiration reaction? They are reactants because they are present before the reaction. They are reactants because they are present after the reaction.

Which series of atomic numbers represents the ordering of consecutive elements within the periodic table? 10, 20, 30, 40 ... 2, 4, 8, 16 ... 1, 3, 5, 7 ... 1, 2, 3, 4 ...

What is true of valence electrons? question 8 options: they are always the lowest energy electrons of the atom. they easily move from one orbital to another. they have difficulty moving from one orbital to another. they exist in the outer orbital?