Which of the following is a physical change. A piece of magnesium metal formed bubbles when dropped in acid

H2O became a vapor when heated

A green chili rotted when left outside

Sodium metal burned with water

Indicate whether each of the following statements about a process in a closed system with a constant volume is always true, false, or true in certain conditions (specify the conditions) : Calculate the heat that must be supplied to 0.

What exactly does the 2 + mean on element Fe2+?

A scientist hypothesizes that fertilizer containing 10 percent nitrogen will produce tomato plants with more leaves and blossoms than fertilizer containing 15 percent nitrogen.

What group of elements do the noble gases belong metals, nonmetals, or metalloids explain

2KClO3 (s) = > 2KCl (s) + 3O2 (g) is there an increase or decrease of entropy?

Which one of these elements is an alkaline earth metal

Write the chemical equations for the neutralization reactions that occurred when hcl and naoh were added to the buffer solution.

Explain The relationship between engineering science and technology

Riya rides his bike 63 miles in 270 minutes. What is his average speed in miles per hour? Be sure to include the equation for speed in your answer. Answer quickly 2 min into question will mark brainlest

NaOH and bleach have several characteristics in common. They include all BUT one of the characteristics listed.