The decrease in atomic size as you move from left to right across the periodic table becomes less pronounced as you move
the periodic table. *
O down
across
O diagonally
O horizontally

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

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?