A solid ionic compound is dissolved in water to form a solution. Describe a simple experiment to show that charges particles are present in this solution

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

Why does his teacher ask him to balance the equation by including the correct coefficient

Which type of fossil does this image depict?