Parts of an Atom
Elements
Molecules
HONC 1234
Model the Molecule
Counting Atoms
100

This is the smallest unit of matter. 

What is an Atom?

100

This element is represented on the periodic table of elements with the letter N.

What is Nitrogen? 

100

These are formed when 2 or more atoms bond together. 

What is a molecule? 

100

The model below shows the molecular structure of this substance. 

What is water?

100

Carbon Dioxide has a chemical formula of CO2 and contains ___________ number of atoms. 

What is 3?

200

This part of an atom orbits around the outside of the nucleus. 

What are electrons?

200

This element is represented on the periodic table of elements with the letters Ag. 

What is silver? 

200

This kind of substance is formed when 2 or more of the same elements bond together.

What is a pure substance? 

200

The model below shows the molecular structure of this substance.

What is Ammonia?

200

Sodium Chloride, more commonly know as table salt, has a chemical formula of NaCl and contains ___________ number of atoms.

What is 2? 

300

These sub-atomic particles have a neutral charges. 

What are neutrons? 

300

Which element has an atomic number of 26? 

What is Iron? 

300

This kind of substance is formed when different elements bond together.

What is a compound?

300

The substance Butane is depicted below. Its molecular formulas would be written like this?

What is C4H10 ?

300

Glucose, more commonly referred to as sugar, has a chemical formula of C6H12O6 and contains ___________ number of atoms.

What is 24? 

400

This sub-atomic particle is located in the nucleus and has a positive charge. 

What is a proton?

400

Which element has an atomic mass of 35.45 AMU. 

What is Chlorine? 

400

Molecules are formed by these types of bonds.

What are chemical bonds?

400

A model of this substance is depicted below. 

What is Ethanol?

400

How many atoms are in the substance below: 

2MgCl2

What is 6?

500

The first layer of this part of an atom can hold 2 electrons, every other layer can hold up to 8. 

What are the electron shells? 

500

The periodic table of elements shows that this element has 79 proton. 

What is Gold?

500

Chemical bonds are formed when atoms share one or more of these between them. 

What are electrons?

500

The special name for 2 molecules that have the same type and number of atoms, but the atoms bond together is a different order are called this. 

What is an isomer? 

500

How many atoms are in the substance below: 


Mg(OH)2

What is 5?