counting atoms
elements
compounds
Comparing elements and compounds
Parts of a chemical formula
100

How many atoms are in 2H2O?

there are 6 atoms

100

What is Fe

Fe is Iron

100

How many capital letters are in a compound?

There are 2 or more capital letters in a compounds.

100

What differentiates Elements and compounds from each other?

What differentiates them in the amount of atoms it has. If there is 1 atom, it is an element, if it has more than 2 atoms, it is a compound.
100

what is a subscript used for in a chemical formula?

A subscript is usually next to an element in a compound and basically tells you how many atoms that element has in the chemical formula. For example, If the formula is CO2, there is one carbon atom and two oxygen atoms.

200

How many atoms are in Fe?

There is 1 atom

200

what is used to represent an element

A chemical symbol

200

Whatg is NaCl?

NaCl is salt.

200

Difference between a chemical symbol and a chemical formula.

The difference between a chemical symbol and a chemical formula is that a chemical symbol consists of one capital letter in the symbol, and a chemical formula has more than 1 capital letter in the formula.

200

What is a coefficient?

The coefficient is used to tell you how many atoms of each element there are for the whole chemical formula. For example,  in 2NaCl there are two sodium and two chlorine atoms so you have a total of 4 atoms.

300

How many atoms are in NaCl

there are 2 atoms

300

What is K

Potassium

300

How is a compound represented?

A compound is represented by a chemical formula.

300

is Fe an element or a compound?

Fe is an element because it has one capital letter and contains one atom.

300

What happens if a coefficient and a subscript are in the same formula, like 4CaCl2?

What happens is that you multiply the two numbers to tell you how many atoms the element that is next to the subscript has. In this case, Calcium has 4 atoms, and since 4 times 2 equals 8, chlorine has 8 atoms for a total of 12 atoms.

400

How many atoms are in H2O?

There are 3 atoms.

400

What is S

S is Sulfur

400

What is C6H12O6?

It is glucose.

400

Is O2 an element or a compound?

O2 is actually an element because it only has one capital letter and even though it has more than one atom, it is the same type of atom.

400

What is the law of Conservation of Mass?

The Law of Conservation of Mass states: matter cannot be created or destroyed, it can only be changed to form new compounds.

500

How many atoms are in C6H12O6

There are 24 atoms

500

What is Au

Au is gold

500

What is CO2?

COis carbon Dioxide.

500

is NaCl and element or a compound?

NaCl is a compound because it has 2 capital letters and two different types of atoms.

500

How many atoms are in 5CO2?

There are 15 atoms in 5CO2.