H2O is an example of a _______________ equation

C + 2H2 ------- CH4. The coefficient in this equation is

Identify type of chemical reaction C H12 O + 6 O2---------6 Co2 + 6 H2 O

2 HCN -----------H2 + 2C + N2 this type of chemical Reaction is:

(N H4)2 (CO3) + 2 PO4--------- 2(NH4)4 (PO4) + 3 CO2 this equation is an example of this type of chemical Reaction:

These elements all have eight (8) valence electrons

___________________ ________________ of an atom are located in the highest energy level.

Neon has 2 energy levels and 8 valence electrons

Krypton has 2 energy levels and 8 valence electrons

In Column #1 on the periodic Table of elements, all of the elements have a valence electron of 1

In Column #2 on the periodic Table of elements, all of the elements have a valence electron of 4

What is the missing coefficient in this equation....NaCl + HCL__-------H2 + Na Cl

Electron Dot Model consist of ___________ __________ encircled with dots representing a specific number of _______________ _______________.

Never change the _____________________ when balancing an equation

A _____________________ _________________ is a process in which some substances change into different substances

Substances that cause a reaction are called ______________.

Substances that are produced in a reaction are called __________________

Fireworks are examples of a ____________________ reaction

Fireworks are made of these elements found in the periodic table called ___________ _____

Remember to never place _____________ in the middle of a chemical formula

Burning wood is an example of an _______________________ reaction

Photosynthesis is an example of an ____________________ chemical reaction

___________________ are the negative ions formed from the gain of one or more electrons

____________________ are the positive ions formed from the loss of one or more electrons.

a visual sign that a chemical reaction is occurring : a __________ is formed

a visual sign that a chemical reaction is occurring : a change in _______________________

a visual sign that a chemical reaction is occurring : a __________ is produced

a visual sign that a chemical reaction is occurring : a __________ is formed

A visual sign that a chemical reaction is occurring: ______________ is produced

All chemical reactions involve _____________________________.

Chemical reactions may occur quickly or slowly. An example of an instant chemical reaction is the rusting of iron.

Chemical reactions may occur quickly or slowly. An example of an instant chemical reaction is the shooting out of foam in a fire extinguisher.

An ___________________ is the smallest unit of matter that retains all of the chemical properties of an element.

An atom consists of two regions. the first is the ______________. The second, much larger, region of the atom is a "cloud" of ______________________

In the nucleus of an atom, you can positively charged particles called ___________.

In the nucleus of an atom, you can find neutral particles called ________________