When a match burns it's mass decreases. Is this a violation of the law of conservation of mass?

Description of the outer core of the earth

Enny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny do next to determine the pH of her solution?

How does earth atmosphere affect the motion of a meteroid

How can i study for a science quiz for monday

3.01 * 1023 molecules H2O

Which model of election configuration is the most accurate? The quantum mechanical atomic model The Rutherford atomic model The Bohr atomic model O Plum pudding atomic model The quantum gravity atomic model

How is the rate of appearance of h2o related to the rate of disappearance of o2?

Occurs when the moon moves between the Earth and Sun and blocks the light

Why have some chemicals been banned from usage in agriculture/food production

Which of the following is a pure substance