while preforming a lab experiment, you and your partner were asked to drop a small scoop of white solid powder into a test tube of clear liquid. The test tube immediately warmed up in your hand and a large amount of bubbles were produced. Did a chemical reaction take place, yes or no? what evidence or lack of evidence do you have to support your answer?

What is important to study for nios grade 12 chemistry? i have only one month left.

Ase your answer to this question on the information below. hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant. the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen. chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product. nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

How have the greenhouse gasses increased from the year 2000 to 2018