The atomic number of this element is 9 and its mass is 20. how many neutrons does this element have?

How can the strength of metallic bonding be measured?

Compared to the particles in a hardened lava sample, the particles in a liquid lava sample A. Have less kinetic energy B. Are closed together C. Are moving faster

Is spilling cake batter a physical or a chemical change? Explain why?

Is pepperoni pizza an element?

Which formula is an ionic compound?

According to the quantum-mechanical model of the atom established by shrödinger, where may the electrons of an atom be found?

Renewable resources cannot be replaced in our lifetime

How do you make a guy who is extremely into you, even though he knows you aren't single, to bug off?

A chemist has dissolved a certain substance in water. The chemist knows that more of the substance could be dissolved into the water before it stops dissolving. Therefore, the current solution is

Which of these particles is the smallest? A. an atom B. a nucleus C. a proton D. an electron