Which is NOT a sign of a chemical change?

Is this an element or compound? CO

Is this an element or compound? Na

Which is a sign of a chemical change?

If an ice cube melts on a hot day-that is a-

Which is a physical change?

Which is a chemical change?

Which is the easiest way for your family to supplement your household energy with no pollution?

What is a disadvantage to nuclear energy?

What is an advantage of nuclear energy?

What is an advantage of hydropower?

What is a disadvantage of hydropower?

Which is a characteristic of a compound?

Which would be a characteristic of an element?

If I mix a clear fluid with a white powder and it turned bright yellow-what happened?

Which are found on the periodic table?

Which are essential for life?

Which is most affected by weather?

A source that can be replaced in a relatively short time

What is true about fossil fuels?

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