A pure substance is found to be a good conductor of electricity in both its solid and liquid

phases. The bonding in the substance is which one of the following?

(a) ionic

(b) covalent molecular

(c) metallic

(d) covalent network

Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. After chatting for a few minutes, she walks 125 meters to the west to meet a friend and then walks 45 meters north with her friend to a cafe for

1. Which of the following is not an example of a change that causes acceleration? A decrease in speed 20% B increase in time 80% C change of direction Dincrease in speed

H2 (g) + I2 (g) →2HI (g) would not be affected by the addition of which gas? H2 (g) I2 (g) N2 (g) HI (g)

5. If an element has 12 protons and 17 neutrons, how many electrons must it have?

Which of the following best describes the relationship between products and reactants in an exothermic reaction? Answer a) The potential energy of the products is greater than the potential energy of the reactants.

Which planets' orbits is the belt located between the main asteroid belt?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone

What will happen if the density of an object is less than the density of water?

Which cannot be separated into simpler substances? compound element solution mixture

What jobs involve chesmistry