Introduction to Matter

This activity is designed to classify matter based on its arrangment at the particle level (very very tiny level!). Work through each problem using problem solving skills to understand the differences between elements, compounds, and mixtures.

1

Based on what you know and observe from the following set of pictures, drag the following particle diagrams to match each picture.

Stavka koja se može prevući		Odgovarajuća stavka
		Oxygen (O₂)
		Water (H₂O)
		Solid salt (NaCl)
		Solid Sulfur (S)
		Air

1

How many atoms are present in a molecule of H₂O?

1

How many atoms of F are present in a molecule of BF₃?

1

How many total molecules are found in the following particle diagram?

1

Two different molecules are represented below. How many different types of atoms are found in a sample of BF₃ and H₂O?

1

How many particles are represented in the following diagram?

2

3

4

1

What do the small numbers (the _subscripts) in the codes represent?

The number of particles in a diagram

The number of atoms in a molecule

The number of molecules in a diagram

The number of molecules in a particle

Read this for the next question: Matter is classified as a pure substance when all of the particles are identical. Matter is classified as a mixture if there are different particles present.

1

Sort the particle diagrams into pure substances and mixtures.

Pure Substances
Mixtures

Read this for the next question: Elements are pure substances made from only one type of atom. Compounds are pure substances made from two or more types of atoms.

1

Sort the pure substances into compounds and elements.

Elements
Compounds

1

Identify whether the following is a compound, mixture, or element: NaHCO₃

Compound

Mixture

Element

1

Identify whether the following is a compound, mixture, or element: C₆H₁₂O₆ & H₂O

Compound

Mixture

Element

1

Identify whether the following is a compound, mixture, or element: Cu & Zn

Compound

Mixture

Element

1

Identify whether the following is a compound, mixture, or element: CO₂

Compound

Mixture

Element

1

Identify whether the following is a compound, mixture, or element: Al

Compound

Mixture

Element

Introduction to Matter

Based on what you know and observe from the following set of pictures, drag the following particle diagrams to match each picture.

How many atoms are present in a molecule of H2O?

How many atoms of F are present in a molecule of BF3?

How many total molecules are found in the following particle diagram?

Two different molecules are represented below. How many different types of atoms are found in a sample of BF3 and H2O?

How many particles are represented in the following diagram?

What do the small numbers (the subscripts) in the codes represent?

Sort the particle diagrams into pure substances and mixtures.

Sort the pure substances into compounds and elements.

Identify whether the following is a compound, mixture, or element: NaHCO3

Identify whether the following is a compound, mixture, or element: C6H12O6 & H2O

Identify whether the following is a compound, mixture, or element: Cu & Zn

Identify whether the following is a compound, mixture, or element: CO2

Identify whether the following is a compound, mixture, or element: Al

Based on what you know and observe from the following set of pictures, drag the following particle diagrams to match each picture.

How many atoms are present in a molecule of H2O?

How many atoms of F are present in a molecule of BF3?

How many total molecules are found in the following particle diagram?

Two different molecules are represented below. How many different types of atoms are found in a sample of BF3 and H2O?

How many particles are represented in the following diagram?

What do the small numbers (the subscripts) in the codes represent?

Sort the particle diagrams into pure substances and mixtures.

Sort the pure substances into compounds and elements.

Identify whether the following is a compound, mixture, or element: NaHCO3

Identify whether the following is a compound, mixture, or element: C6H12O6 & H2O

Identify whether the following is a compound, mixture, or element: Cu & Zn

Identify whether the following is a compound, mixture, or element: CO2

Identify whether the following is a compound, mixture, or element: Al

How many atoms are present in a molecule of H₂O?

How many atoms of F are present in a molecule of BF₃?

Two different molecules are represented below. How many different types of atoms are found in a sample of BF₃ and H₂O?

What do the small numbers (the _subscripts) in the codes represent?

Identify whether the following is a compound, mixture, or element: NaHCO₃

Identify whether the following is a compound, mixture, or element: C₆H₁₂O₆ & H₂O

Identify whether the following is a compound, mixture, or element: CO₂

How many atoms are present in a molecule of H₂O?

How many atoms of F are present in a molecule of BF₃?

Two different molecules are represented below. How many different types of atoms are found in a sample of BF₃ and H₂O?

What do the small numbers (the _subscripts) in the codes represent?

Identify whether the following is a compound, mixture, or element: NaHCO₃

Identify whether the following is a compound, mixture, or element: C₆H₁₂O₆ & H₂O

Identify whether the following is a compound, mixture, or element: CO₂