The figure represents a solid block of copper metal in a beaker at 30°C Which of the following best represents the particle arrangement as a student tips the beaker, which is kept at 30°C?

What is the chemical formula of the following compound

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)