What is the mode of these results (60, 55, 45, 55, 60, 55, 45, 40, 54, 42)

What is the median of these results? (11, 12, 10, 13, 12, 21)

An electrical fire should be put out using which type of extinguisher?

A student measures the rate of a reaction using a specific concentration of catalyst. The results are as follows: 5.4s, 5.5s, 5.4s, 5.4s, 5.5 s. These results are:

A lit splint is a hazard. What is the risk it poses?

A risk assessment form says that poisoning is a risk. Which chemical is most likely to be the source of the hazard?

Which piece of glassware is most suitable for collecting a liquid that needs to be swirled to dissolve solute?

A student wants to measure electrical resistance in a copper wire, but there isn't any in the lab and he uses nichrome instead but doesn't tell anyone. He publishes the results. This means his results CAN'T BE

A researcher changes the temperature a reaction is carried out at. This is which type of variable?

Which of these pieces of safety equipment is PPE

A scientist is using potassium (K) metal. Which chemical should this element not be mixed with