SCI 6 FQ Chapter 1 Lesson 1 Heterogeneous Mixtures

SCI 6 FQ Chapter 1 Lesson 1

This chapter talks about the chemistry of mixtures. It will provide the pupils an in-depth look at the concept of mixtures and develop an appreciation on the importance of mixtures in our life.

Chapter 1: What Are the Characteristics of Mixtures?

Lesson 1: Heterogeneous Mixtures 

Important Question to answer:

What are heterogeneous mixtures?

Objective: Learners are expected to

1. Define mixture

2. Explain why a certain mixture is classified as heterogeneous

3. Enumerate examples of heterogeneous mixtures

4. Write a reflection about the importance of studying mixtures

Poll

Have you ever experienced having a blood test?

• Yes

• No

After the extraction, the blood is transferred to a sealed test tube

Then it will be gently inverted a few times before storing it

Blood is an example of a mixture.

It is a mixture of plasma and blood cells.

Inverting the collected blood immediately after collection is an important step

It needs to be done to analyze the blood sample properly

Multiple Select

What is a mixture?

• A mixture is made when two or more substances are combined, but they are not combined chemically.

• The components of a mixture can be easily separated and each keep their original properties

• There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures.

When two or more substances mix with each other without participating in a chemical change,

the resulting substance is called a Mixture.

Here are examples of Mixtures

• Crude oil: A mixture of organic compounds (mainly hydrocarbons)

• Seawater: A mixture of various salt and water.

• Air: a mixture of various gases like oxygen, carbon dioxide, nitrogen, argon, neon, etc.

• Ink: A mixture of colored dyes.

• Gunpowder: A mixture of sulfur, potassium nitrate and carbon.

Multiple Select

What are the properties of mixtures?

• The components of a mixture each keep their original properties.

• The separation of components can be easily done.

• The proportion of the components is variable.

Poll

Do you know the different types of mixtures?

• Yes

• No

• Maybe

There are two main categories of mixtures:

• Homogeneous mixtures

• Heterogenous mixtures

Multiple Select

What are heterogeneous mixtures?

• This mixtures possess different properties and compositions in various parts i.e. the properties are not uniform throughout the mixture.

• This mixtures can be defined as the mixtures which possess the same properties and combination throughout their mass.

A mixture which you can easily distinguish the components and ingredients is a Heterogenous Mixture.

Heterogenous mixtures often have a main component. This main component, sometimes called a base, is the most abundant part into which the other ingredients are mixed.

A mixture of sand mixed with salt is an example of a heterogeneous mixture.

Heterogeneous mixtures possess different properties and compositions in various parts i.e. the properties are not uniform throughout the mixture.

Multiple Select

Can you identify heterogenous mixtures below?

• mixed nuts

• choco chip

• pizza

• sand

• sandwich

Halo-halo is one of the most popular Filipino desserts. It is an example of a heterogenous mixture.

Can you identify its components?

Open Ended

Open page 6 of your book, read, identify, type in 10 examples of heterogenous mixtures the occur in nature.

Open Ended

Search in the web and type in 10 examples of human-made heterogenous mixtures.

There are many types of heterogenous mixtures depending on the type of matter composing them.

Some are a mix of solid and liquid, like cereals in milk. Some are gas-liquid mixtures, like body sprays. Some are solid gas, like smoke.