The chemical formula for the compound that consists of barium ions (Ba+2) and

oxide ions (0-2) is

Ba₂O₂

O O² Ba²

COBa

Bao

In your own words, explain John Martin s theory about iron dumping.

Silver chloride breaks down to form silver and chlorine in the presence of light. what type of reaction is this? A combination reaction, B double-replacement reaction, C single-replacement reaction, D decomposition reaction?

Flora and Bunda are neighbors. Each woman bought A new rosebush on the same day and the rosebushes were exactly the same size. They also bought a watering can share. Every day for three weeks Flora put one full watering can of water on her rose bush.

which of the following substances would most likely be malleable? a) glass b) copper c) ice d) diamond

How does the magnetic field surrounding earth benefit humankind A it prevents magma from seeping out of the crust B it steers aircraft away from radiation belt C it protects us from radioactive particles D it draws more oxygen into the atmosphere

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.