A. properties which can be observed since it's what you're physically viewing
Dark is just absence of light like if the re container a and container b u nee to pour hcl from a to so a has hcl while b has absence of hcl
tell me if u need more examples.hope it helps
It's the law! Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants.
Answer:
combustion of methane gass will take place when the flame is yellow
amount of product formed or amount of reactants used / time
