Atoms, Compounds, and Mixtures

Atoms, Compounds, and Mixtures

By Maximiliano Cordera

Multiple Choice

Atoms combine in different ways to make up all of the substances you encounter every day.

• True

• False

Multiple Choice

Saltwater can be separated into salt and water.

• True

• False

Multiple Choice

A mixture of soil has the same chemical composition throughout

• True

• False

Open Ended

Why are the spheres representing nitrogen and oxygen in different colors?

Multiple Select

The image represents the structure of the gold. Select all the correct statements

• The gold is made up of the same kind of atoms

• The gold is a compound

• Gold is a pure substance

• The structure of the gold is the same everytime

Multiple Select

Select all the pure substances

• Carbon

• Salt

• Mud

• Sea water

Open Ended

What happens when a pure substance undergoes a chemical change?

Draw

Select on group pf the following things

Open Ended

Name some properties of these materials

Fill in the Blanks

Classifying elements

Elements can be classified according their properties

​Physical

​Chemical

Multiple Select

Select all the properties of the gold

• Shiny

• Flammable

• Good electricity conduction

• Malleable (can be molded as thin wires)

Multiple Select

Select all the properties that carbon has

• Good heat conduction

• Good electrical conductivity

• Can be dissolved in water

• Can be molded in wires (malleability)

​A Periodic Table is a useful tool that has all the elements that make up the matter. These elements are arranged according to their properties

Arranging the elements

​

Elements are classified into metal, no metals, and metalloids

Major classification

Classifying compounds

There are compounds everywhere? how can you classify them??

Open Ended

How can you classify the compounds??

You can classify the compounds as acidic, neutral or basic measuring a special value known as pH

​

pH

Multiple Choice

Which one is a basic compound?

• Lime juice

• Water

• Milk

• Coffee

Fill in the Blanks

All the organic compounds have carbon and hydrogen. If they don't have these elements they are inorganic

You probably know organic food such as a banana peel​

​

Organic or inorganic

Fill in the Blanks

The organic compounds made up of living things are called biochemicals and can be divided into four categories

​

We learn this in the nutrition class

Their role in our body

Fill in the Blanks

What are all this ingridients for?

Is a combination of two or more substances that are combined physically but not chemecally

Mixtures

Multiple Select

Select all the mixtures

Mixtures are not pure subtances

Mixtures do not have definite properties like pure substances.

• Contain more than one type of substance

• ​Each substance in a mixture conserves its initial properties

• do not conserve definite properties​

• Can be separated by physical changes.

Mixture

• Contain only one type of substance

• They have definite properties

• Can only be formed or separated by chemical changes​

Pure substance

Pure subtances vs Mixtures

Some text here about the topic of discussion

Some mixtures are easy to separate but other one seem to be more difficult or even imposible​

​

​Some text here about the topic of discussion.

How to separate the mixtures!

​

How can mixtures be classified?

Some text here about the topic of discussion

Does not have a uniform composition

Heterogeneous

Is a mixture with a uniform composition

Homogeneous

Multiple Choice

Water and oil

• Homogeneous

• Heterogeneous

• Pure substance

Multiple Choice

Coffee

• Homogeneous

• Heterogeneous

• Pure substance

Multiple Choice

Air

• Homogeneous

• Heterogeneous

• Pure substance

Heterogenous mixture where solid particles are spread throughout a liquid or gas

Suspensions

Homogenous solution where to substances in the same state are mixed together

Solutions

Between suspensions and solutions are colloids. Mixtures where the solid particles do not settle down.

They are heterogenous​

Colloids

Open Ended

Name a solution other than Tea

Open Ended

Name a suspension other than a snowglobe

Open Ended

Name a colloid other than gelatine