MYP Chemistry Topic Word and Chemical Equations…

This site uses cookie tracking technologies. Learn more in our Cookie Policy.

MYP Chemistry Topic Word and Chemical Equations… | RevisionDojo

Word and Chemical Equations

Why Chemists Write Equations At All

When a chemical reaction happens, atoms are rearranged into new substances.
The reaction might look simple in real life (a flame, bubbles, a colour change), but scientists need a way to:
1. describe exactly what substances are reacting
2. show how many particles react and form (ratios)
3. compare reactions fairly between experiments
4. communicate the same idea internationally and accurately
A chemical equation is like a “reaction sentence” that tells the story of what changes, using a standard format that chemists worldwide understand.

Word Equations

What a Word Equation Shows

A word equation describes a reaction using the names of substances.

reactant(s) → product(s)

Reactants start the reaction (written on the left)
Products are formed (written on the right)
The arrow → means “produces” or “forms”
A plus sign + means “reacts with” or “and”

Example

Hydrogen + oxygen → water

Note

Word equations are especially useful when you are first learning chemistry because they focus on meaning (what substances are involved) without needing formulas yet.

Chemical (Symbol) Equations

What a Chemical Equation Shows

A chemical (symbol) equation represents the same reaction using chemical formulas.
It can also include extra information such as state symbols, reaction conditions, and sometimes energy changes.

Example

2H₂(g) + O₂(g) → 2H₂O(l)

This is more precise than a word equation because it shows:

the formulas (exact identity of substances)
the ratio of particles reacting (coefficients)
the physical state of each substance (state symbols)

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

MYP Chemistry Word and Chemical Equations Notes

Word and Chemical Equations

Why Chemists Write Equations At All

Word Equations

What a Word Equation Shows

Chemical (Symbol) Equations

What a Chemical Equation Shows

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Word and Chemical Equations

Why Chemists Write Equations At All

Word Equations

What a Word Equation Shows

Chemical (Symbol) Equations

What a Chemical Equation Shows

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Periodic table5 subtopics

Matter5 subtopics

Types of chemical reaction18 subtopics

International Union of Pure and Applied Chemistry (IUPAC)4 subtopics

Pure and impure substances2 subtopics

The atmosphere2 subtopics

Bonding4 subtopics

MYP Chemistry Word and Chemical Equations Notes

Periodic table5 subtopics

Matter5 subtopics

Types of chemical reaction18 subtopics

International Union of Pure and Applied Chemistry (IUPAC)4 subtopics

Pure and impure substances2 subtopics

The atmosphere2 subtopics

Bonding4 subtopics

Word and Chemical Equations

Why Chemists Write Equations At All

Word Equations

What a Word Equation Shows

Chemical (Symbol) Equations

What a Chemical Equation Shows

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Word and Chemical Equations

Why Chemists Write Equations At All

Word Equations

What a Word Equation Shows

Chemical (Symbol) Equations

What a Chemical Equation Shows

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account