Reactions
Bonds
Periodic Table
Atoms
Problems
100

electrons in the outer shell of an atom

What are valence electrons?

100

A type of chemical bond that involves the electrostatic attraction between oppositely charged atoms.

What is an ionic bond?

100

Group of elements that do not react chemically with other elements.

What are noble gases?

100

a subatomic particle with a positive electric charge

What is a proton?

100

Subatomic particles whose quantity determines which element an atom is.

What are protons?

200

a process that leads to the transformation of one set of chemical substances to another

What is a chemical reaction?

200

a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs

What is a covalent bond?

200

A material that is typically hard, opaque, shiny, and has good electrical and thermal conductivity

What is a metal?

200

the number of protons found in the nucleus of an atom of that element

What is the atomic number?

200

Element consisting of a single proton.

What is hydrogen?

300

a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.

What is a double replacement reaction?

300

An atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.

What is an ion?

300

A chemical element with properties in between, or that are a mixture of, those of metals and nonmetals

What is a metalloid?

300

the smallest constituent unit of ordinary matter that has the properties of a chemical element

What is an atom?

300

The atomic mass of an atom with 5 protons, 6 electrons, and 3 neutrons.

What is eight amu?

400

energy + 6CO2 + 6H2O ------> C6H12O6 + 6O2

What is photosynthesis?

400

a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.

What is a chemical bond?

400

protons + neutrons

What is atomic mass?

400

Smallest particles in an atom

What are electrons?

400

The charge of a neutral atom that gains 2 electrons.

What is negative two?

500

The charge of an ion.

What is the oxidation number?

500

Bond formed between a metal and a nonmetal.

What is an ionic bond?

500

protons - electrons = ???

What is atomic charge?

500

The number of valence electrons a neutral carbon atom has.

What is four?

500

Particles that are transferred (given/taken) or shared when two atoms react chemically.

What are electrons?