Where is the sand or pebbles after you filter? where is the salt after you filter? how could you separate the salt from its current location? what other mixtures could be separated in this way? what did you find out from this investigation? be thoughtful in your answer.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which metal exist in liquid state and can be cut with knife ?

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a