The test tube that contained the calcium metal was probably the most difficult of the test tubes to clean. Why was aqueous HCl used to clean the tube?

Which statement best describes a bacterial cell? A It contains more than one cell. B It is a complete organism. C It is part of a larger organism. D It contains different kinds of cells

Does mercury have any reconnaissance satellites? (science)

A group of science students collect bacterial swabs from several locations inside their school. The collected bacterial swabs are spread over an agar-filled petri dish and bacteria colonies are grown.

What color is phenolphthalein in acidic conditions and what color is it in basic conditions?

When placed in a 100-mL square box, a substance has a spherical shape and has a volume of 50 mL. When placed in a 100-mL circular tube, that same substance has a spherical shape and a 50-mL volume. In what phase or state was the substance?

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true

If an element has 1 valence electrons, how many dots will be in the elements dot diagram?

What is the temperature of a gas at STP?

What is the numerical meaning of centimeter

You run an experiment to test the effects of temperature on solubility. What would you heat? A.) solvent B.) solute C.) the room B.) the beaker