What is the electron structure of a beryllium ion with a net ionic charge of + 2?

1s1

1s2

2s1

2s2

When KCl dissolves in water A) the Clions are attracted to dissolved K + ions. B) the Clions are attracted to the partially negative oxygen atoms of the water molecule. C) the K + ions are attracted to Clions on the KCl crystal.

A molecule of an unsaturated hydrocarbon must have

Why is an asteroid not considered a moon

Carbon bonds with many nonmetals very easily. This is part of the reason why life (as we know it) is carbon based.

All of the following are true about science except It is a body of knowledge. It does not change once a law is discovered. It is tested by many scientists over time. It uses the scientific method.

If you change the state of something, say, liquid to solid, is it a physical or chemical change?

What type of calorimeter would be best to use if you wanted to measure the heat that is released when gasoline is burned?

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?

Label the molecular shape around each of the central atoms in the amino acid glycine. hint

Which has more atoms, 2moles of carbon or 2 moles of aluminum