yayayaya

 What is daltons atomic theory?

all matter is composed of tiny, indivisible particles called atoms

Why was daltons theory more accepted than other peoples theories?

based with a scientific basis and provided evidence

What makes up the atomic nucleus?

protons, which have a positive charge, and neutrons, which have no charge

What is the difference between protons and neutrons and electrons?

protons being positive, neutrons having no charge, and electrons being negative;

Why Is it that atoms have no electric charge but are full of charged particles?

they contain equal numbers of positively charged protons and negatively charged electrons

What are energy levels?

rings that electrons orbit on

Atoms of elements that are in the same group have the same number of what?

valence electrons

What are valence electrons and why are they important?

Valence electrons are on the outermost shell and They determine an element's reactivity and the types of bonds it can form.

What is ionization?

Ionization is the process of removing one or more electrons from an atom or molecule

Why is lithium ion much less reactive than a lithium atom?

a lithium ion has become stable when it losed its valence electron

What does atomic number mean?

the atomic number is the number of protons in the nucleus of an atom.

What does mass number mean?

its the total number of protons and neutrons

What is average atomic mass and where can you find it on the periodic table?

its the weighted average of an element and its below the element symbol

What is an atomic mass unit?

a unit of mass used to express atomic and molecular weights

What side of the periodic table left to ride are the alkili metals on?

the very left side

Why are alkali metals so reactive?

they have only one valence electron

Why are the noble gases enert?

their outermost electron shell is completely filled

What are semiconductors?

a material with electrical conductivity that falls between that of a conductor

Most halogens form compounds like gaining or losing electrons, which one is true? (gain or lose)

gain

Which side of the periodic table are the nonmetals on?

the right side

Do transition metals form compounds by gaining or losing electrons? Which one (gain or lose)

lose

What is a mole?

a unit of measurement used to quantify the amount of a substance

What is abigadros constant?

What is Moler mass?

the mass in grams of one mole of a substance

the order of elements in the periodic table is based on what?

the periodic table is based on their increasing atomic number