Which of the following best describes an atom?A)Protons and electrons grouped together in a random pattern. B) A core of electrons and neutrons surrounded by protons. C) A core of protons and neutrons surrounded by electrons. D) I’m not sure. I need more help with this topic.

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

What must occur for air masses to form fronts

How is the atomic number of a nucleus changed by alpha decay