Use the law of conservation of the mass to explain how you know that the atoms make up all matter in the universe today are the same atoms that have existed since the universe began.

Which of the following describes volume? A. The number of particles or amount of matter B. Amount of mass contained in a certain space C. How fast the particles of matter are moving D. The amount of space that matter occupies

Which isolated gaseous atom has a total of five electrons occupying spherically shaped orbitals? A) sodium b) potassium c) boron d) flourine

One of the first people to state that matter is made up of atoms was

Describe the motions of particles in the 3 common states of matter

Ionic bonds form between oppositely charged

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?

Convert 970. mm Hg to atm.

The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given kinetic energy.

Is fire hot or cold?

In Flask A, you reacted 7.23 g Mg with 1.05 mol HCl. In Flask B, you reacted 1.22 g Mg with 1.35 mol HCl. Which balloon will inflate the most?