4. Which of the following statements correctly describe atoms? Select all that apply.

A) Atoms have mass,

B) Atoms are the basic unit of a chemical element.

C) Matter is made of atoms.

D) Atoms take up space.

Consider an iron cube, an aluminum cube, and a balloon filled with helium gas. If all were at the same temperature, how would the average kinetic energy of particles compare?

Nuclear waste is A the energy from nuclear fission that is converted to thermal energy. B the bonds that hold the nuclei of atoms together. C what remains after nuclear fission dissolves the nuclei of atoms.

Which statement describes evidence of chemical reaction

Equal arm balances are used to measure: mass weight density force

Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (CaCO₃) into solid calcium oxide and gaseous carbon dioxide. Suppose 23.

How many particles are in 1 mole of a substance?

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?