In naming the compound pcl5 the prefix used with the second element is

Which is a chemical change? O A. water boiling O B. wood burning OC. glass breaking OD. ice melting E. molding iron

How is it possible to predict the type of bond that is likely to be found in a substance? what types of atoms generally form ionic or covalent bonds? how can electronegativities be used to determine the type of bond?

What is the periodic table based on? 1. The mass of atoms. 2. The charge of atoms. 3. The structure of atoms. 4. The color of atoms.

In the balanced equation describing the combustion of methanol (CH3OH); what is the coefficient for oxygen?

Why do scientist sometimes discard theories? A - the steps Scientific met that were not followed in order B - public opinion disagrees with the theory C - the theory is opposed by the church D - contradictory observations are found E - congress

Identify the following: 1. The only 2 liquid elements. 2. The element in period 4, group 0. 3. The second metalloid in period 4. 4. The first element in group 4A.

You are about to open a container of soy milk but notice that there are instructions to "shake well before serving." the soy milk is most likely a

Give reason: a. Fractionating columns with beads are used for fractional distillation b. Crystallisation is a better technique than evaporation

How can a gardener remedy soil that is overly acidic?

True or false everything has the same amount of energy?