4. For a reaction to occur, energy must be_

__ to break chemical bonds.

Seafood Watch has made several unsustainable fishing practices illegal. true or false

The hottest layer of the atmosphere

What is the name of the high energy compound that cells use directly for fuel?

Blance NH3+Na--->NaNH2+H2

In the current model of the atom, ___. electrons and protons are mixed together in a solid sphere electrons orbit around the positively charged nucleus in set patterns called orbitals electrons travel as waves in the electron cloud that surrounds

How many grams of sodium ions are in na2so4?

Electron configuration for iron?

Explain how melting is considered endothermic

In the process of covalent bonding, atoms share electrons. This means that * a) Electrons from each atom are attracted to the nucleus of both atoms b) Protons and neutrons attract c) Atoms lose electrons and become ions d) Atoms gain electrons and

Give the full atomic symbol for an atom that has 30 neutrons and an atomic number of 25