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SCIENCE EXAM
Question | Answer |
---|---|
WHAT IS A CATALYST? | A SUBSTANCE THAT CHANGES THE SPEED OF A CHEMICAL REACTION |
WORD EQUATION FOR THE PREPARATION OF OXYGEN | Hydrogen peroxide (MANGANESE OXIDE)→ Water + Oxygen |
CHEMICAL EQUATION FOR THE PREPARATION OF OXYGEN | H2O2 (MnO2)→ O2 + H2O |
CHARACTERISTIC TEST FOR OXYGEN | GLOWING SPLINT THAT RELIGHTS IN A GAS JAR OF OXYGEN |
IS OXYGEN ACIDIC, NEUTRAL OR BASIC? | NEUTRAL |
Word equation for preparation of carbon dioxide | calcium carbonate |