What kind of change (physical or Chemical) occurs when a compound is separated into its individual elements?

Tijuan mixed a solid and a liquid together in a beaker. He determined that a chemical change occurred.

What is change in atomic number when an atom emits positron?

In chemistry-what is a catalyst

table salt has the chemical formula NaCl. Table sugar has the chemical formula C12 H22 O11. which of the following is true

14. Several days after a snowfall, the roofs of some homes on your street have almost no snow on them, while the roofs on other homes are still snow covered.

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

0.100 mol of CaCO3 and 0.100 mol CaO are placed in an 10.0 L evacuated container and heated to 385 K. When equilibrium is reached the pressure of CO2 is 0.220 atm. 0.

What is true about the charges of transition metal ions?

A gas obeys the ideal-gas equation of state P V = N k T, where N = n NA is the number of molecules in the volume V at pressure P and temperature T and n is the number of gm-moles of the gas.