Which model is most likely used to show something that happens too slowly to see?

a model of a weather system

a model of mountain formation

a model of the area of a circle

a model of an architectural building

How can you make a solution saturated? add more solution add more solvent add more solute decrease the consentration

A user is constructing an ionic bond between beryllium and chlorine and has reached the stage below what should the user do next?

The bonding of two atoms will most likely occur if: A.) a more stable state can result from the union B.) the outer shell can be completely filled C.) all the valance electrons are removed D.) the electronegativity of both atoms are similar

Why must a measurement include both a number and a unit?

Currently, electricity from solar panel systems is cheaper than electricity produced from fossil fuel or nuclear power plants True False

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