What evidence can be used to to determine if the change is a physical change

Choose all that apply

The solid dissolved

The solid formed bubbles

The solid changed colors

The combination produced heat

How do i know how many covalent bonds are made by each atom?

Fuel cells have been developed that can generate a large amount of energy. For example, a hydrogen fuel cell works by combining hydrogen and oxygen gas to produce water and electrical energy. If a fuel cell can generate 10.

An atom in the ground state contains a total of 5 electrons 5 protons and 5 neutrons. Which Lewis electron-dot diagram represents this atom

Which product is made up of fatty acids that are derived from alkenes? margarine polystyrene cups pain relievers rubber tires

What happens when a vinyl strip is rubbed with a woolen cloth, then brought near a stream of water?

Trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 M HCl solution. How many moles of HCl are in the beaker? Remember, molarity = moles liter.

Why is the correct name of compound Silicon Pentoxide and NOT Silicon Pentoxide?

10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have what volume?

Which type of heat transfer involves the movement of warmed material? A. radiation B. conduction C. convection

During which stage of the cell cycle dies the cell condense chromosomes and break down the nuclear envelope