The lab question is “Based on a substance’s properties, how can you determine whether its bonds are ionic or covalent?” Fill in the box to answer this question with a hypothesis.

Hypothesis: If a substance contains ionic bonds, then its properties would include . . .

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa