Silicon (si) is an element that computers run. how many valence electrons does silicon have? write your answer as a number, not the word form of the number.

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Compare and contrast solutions and suspensions