Which of the following is an example of a double replacement reaction?

(a) 3Fe + 2O2 Fe3O4

(b) BaCl2 + K2CO3 BaCO3 + 2KCl

(c) NiCO3 NiO + CO2

(d) Cl2 + 2NaBr 2NaCl + Br2

If gas is moved from a large container to a small container but it's temperature and number of miles remain the same, what would happen to the pressure of the gas?

A sample liquid is heated in a closed container until it changes to gas. what happens to the size of the particles in the sample

How does the scientific meaning of a theory differ from its everyday sense?

Са Нѕ он сня 1 3 с-с-с-с-сно 빌 СН3 cool CH 3

All heat engines involve combustion. True False

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?

Why are phosphates in laundry detergent

What is the name of the scientist who discovered the electron

Which of these is not a covalent molecule? 1. F2 2. CO 3. LiF 4. NH3