In the reaction 2Na + Cl2 2NaCl, the products are a) half the reactants.
b) twice the reactants.
c) the same as the reactants.
d) different from the reactants.

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

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Air can be considered a mixture. which statement does not explain why?