Question

Why is carbon said to provide a “backbone” in many molecules?(1 point) Responses Carbon atoms can form chains and branches with each other, and other atoms can attach to these. Carbon atoms can form chains and branches with each other, and other atoms can attach to these. Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily. Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily. Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily. Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily. Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.

Answer 1

Why do scientists sometimes discuss the possibility of silicon as a basic element for life?(1 point) Responses Silicon is similar in abundance to carbon. Silicon is similar in abundance to carbon. Silicon is similar in atomic mass to carbon. Silicon is similar in atomic mass to carbon. Silicon has an outer shell of electrons that is similar to carbon. Silicon has an outer shell of electrons that is similar to carbon. Silicon has an inner shell of electrons that is similar to carbon.

Answer 2

Which chemical formula provides the most information about a chemical compound in increasing order?(1 point) Responses a molecular formula, a structural formula, a 3-D formula a molecular formula, a structural formula, a 3-D formula a molecular formula, a 3-D formula, a structural formula a molecular formula, a 3-D formula, a structural formula a structural formula, a 3-D formula, a molecular formula a structural formula, a 3-D formula, a molecular formula a 3-D formula, a structural formula, a molecular formula

Answer 3

Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

Answer 4

Silicon is similar in atomic mass to carbon.

Answer 5

A structural formula, a 3-D formula, a molecular formula