Question

open - ended questions: answer the following questions in complete sentences. explain the difference between mass and weight. give an example to support your answer. describe what a chemical bond is, why it is important in forming compounds, and give an example of a compound that is held together by chemical bonds.

Explanation:

Mass is the amount of matter in an object, a scalar quantity that is constant. Weight is the force exerted on an object due to gravity, calculated as $W = mg$ (where $m$ is mass and $g$ is gravitational acceleration), and it varies with the gravitational field. For example, an astronaut's mass on Earth and in space is the same, but weight is different. A chemical bond is the force that holds atoms together in a compound. It is important as it determines the structure and properties of compounds. Water ($H_2O$) is held together by covalent chemical bonds between hydrogen and oxygen atoms.

Answer:

Mass is the amount of matter and is constant; weight is the gravitational - force on an object and varies. Example: an astronaut's mass is same on Earth and in space but weight is different. A chemical bond is the force holding atoms in a compound, important for compound structure and properties. Example: water ($H_2O$) has covalent bonds between hydrogen and oxygen.