What is the general rule for solutions? Unlike substances always dissolve in each other All substances dissolve in water Like dissolves like Solutes are always present in larger amounts than solvents

A change in the size, shape, or state of matter. chemical change physical change

Which of the following is NOT a characteristic of solutions? Particles never settle on standing Particles can be separated by filtering Light passes through unchanged Particles are between 0-100 nm in size

What 2 things are true about CaCl_(2) D a it has ionic bonds b It is called Calcium (II) Chloride C It is called calcium chloride. d it has covalent bonds e it has metallic bonds f It is called calcium dichloride.

The strongest interactions between molecules of ammonia (NH_(3)) are A dipole-dipole. B polar covalent. C ionic bonds. D dispersion forces. E hydrogen bonds.

Compare a physical change to a chemical change? A physical change keeps the same composition A chemical change creates a new product A chemical change keeps the same composition A physical change creates a new product