Lesson: Mixtures & Compounds

Slides:

Advertisements

Similar presentations

What is a chemical equation?

Advertisements

Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.

Atoms Elements Molecules Compounds Pure Substance Mixture Solution.

Elements, Compounds and Mixtures

Atomic Structure. Lesson Objectives To know what is meant by an atom. To know that an atom is made up of three smaller particles. To be able to draw the.

How do we get all other materials? Aims: –To be able to classify materials as elements and non-elements –To be able to describe simple compounds and molecules.

Compounds Student Learning Objectives: define what a compound is define what a compound is compare elements and compounds compare elements and compounds.

What are compounds? Learning objectives:

Introduction to Matter

Chemical Formulas. Molecules and Compounds 4 A molecule is two or more atoms that are bonded together. –H 2, O 2, N 2, H 2 O, CO 2 4 A compound is two.

Chapter 1 Introduction to Matter Section 1 Describing Matter

Compounds and Mixtures (8G: Lesson 1). Lesson Objectives Must: To be able to recall examples of elements and compounds. Should: To be able to describe.

Write definitions / descriptions for the following physical properties: Physical PropertyDefinition/Description Physical appearanceColor, size (volume),

Composition of constituents The composition of constituent of a mixture is not fix. Air is made up of a mixture of gases. There is ___ % nitrogen gas,

Elements, Compounds and Mixtures. Chapter 16. Classification of Substances Elements Molecules Compounds Mixtures.

Elements, Mixtures & Compounds

Compounds and Mixtures

Compounds, Elements & Mixtures

Section Two or more substances that have been combined, but not chemically changed. In salt water, the salt and the water keep their own properties.

Classifying Matter. A. Pure Substances 1.Elements (Atoms) – Substances that cannot be broken down. A)H – Hydrogen B)O – Oxygen C)Mg – Magnesium 2.Compounds.

 An Element is a simple substance that cannot be split up into simpler substances by chemical means.

Elements, Compounds, and Mixtures – song

A compound is a substance consisting of two or more elements together. A compound is a substance consisting of two or more elements chemically combined.

Elements An element is a pure substance made of only 1 type of atom.

COMPOUNDS AND MIXTURES

Elements, Compounds and Mixtures

Atoms Elements and Compounds

Elements, atoms, molecules, mixtures

Properties of elements and compounds Why is it safe to put sodium chloride on fish and chips… …but not safe to use sodium and chlorine?

Classifying Matter Elements , Compounds and Mixtures.

Formulas Combining symbols of different elements in a compound is called a chemical formula. Metal written first, non-metal written second. Example: Na.

Element Identification Chart

Solutions and mixtures

Compounds Thursday, 20 September 2018

Elements, Compounds and Mixtures

Compounds and Mixtures

Chapter 11 Lesson 1.2 – Part 1 Substances and Mixtures

Elements and Compounds

Atoms, Molecules, Elements, and Compounds

1. WHAT IS A COMPOUND A PURE SUBSTANCE MADE OF TWO OR MORE ELEMENTS CHEMICALLY BONDED HAS IT’S OWN PHYSICAL AND CHEMICAL PROPERTIES CAN ONLY BE SEPARATED.

Compounds A compound is a pure substance composed of two or more ________ that are _________ combined. elements chemically A compound has different properties.

Atoms, Molecules, Pure Substances, & Mixtures

Chemical Reactions Notes #2

Matter: Compounds and Mixtures

Elements and Compounds

Warm-Up: 2/4 Classifying Elements

Compounds and Mixtures

ELEMENT COMPOUND -or- MIXTURE?.

Elements, Mixtures & Compounds

Bell Ringer Write everything you know about matter.

Conservation of Mass Noadswood Science, 2016.

Properties of elements and compounds Why is it safe to put sodium chloride on fish and chips… …but not safe to use sodium and chlorine?

Unit 2: Chemistry Lesson 2: Classifying Matter Essential Questions: 1

Classification of Matter

Unit 2: Chemistry Lesson 2: Classifying Matter Essential Questions: 1

Elements, Compounds and Mixtures

Elements, Compounds, Mixtures

Describing Matter.

Comparing elements and compounds

Comparing elements and compounds

atoms, molecules, and compounds

Elements, Compounds, and Mixtures

CHEMICAL AND MATERIAL BEHAVIOURS

Elements, Compounds, Mixtures

Synthesis Reactions!.

Presentation transcript:

Lesson: Mixtures & Compounds

Mixture: A mixture is made of two or more substances mingled together but not chemically combined. Air is a mixture Sea water is a mixture

Air contains: nitrogen oxygen carbon dioxide

Sea-water contains: water salt The Dead Sea has a high concentration of salt.

Compound: A compound is formed when two or more elements chemically combined. e.g. water, CO2 Carbon dioxide gas is a compound formed when one atom of carbon is combined chemically with two atoms of oxygen (CO2). oxygen carbon

A compound is formed when two or more elements combine chemically oxygen Water is a compound formed when one atom of oxygen is combined chemically with two atoms of hydrogen (H2O). hydrogen

Examples of compounds Water (H2O) Carbon dioxide (CO2) Magnesium oxide (MgO) Iron sulfide (FeS) How many atoms are in each molecule of the above compounds?

Differences between mixtures and compounds Made of 2 or more substances Is a single substance Properties are the same as the properties of the substances mixed together Properties are different to the elements involved Generally easy to separate Difficult to separate

A compound is a completely new substance with its own properties. Water (H2O) is a liquid that can put out fires. Yet, the elements that make it are very different. Hydrogen (H2) is an explosive gas. oxygen Oxygen (O2) is gas needed for burning. hydrogen

A compound is a completely new substance with its own properties. Carbon dioxide (CO2) is a colourless gas used to put out fires. oxygen Carbon (C) is a black solid. Oxygen (O2) is needed for burning. carbon

A compound is a completely new substance with its own properties. Magnesium oxide (MgO) is a dull white solid. Magnesium (Mg) is a soft shiny metal. Oxygen (O2) is needed for burning.

A compound is a completely new substance with its own properties. Iron (Fe) is a metal that is attracted to magnets. Sulfur (S) is a bright yellow solid. Iron sulfide (FeS) is a grey solid that is not attracted to magnets.

Review Questions 1. Is air a mixture or a compound? 2. What elements is carbon dioxide made from? 3. Name one difference between a compound and a mixture. 4. Hydrogen is explosive and oxygen is needed for burning. What compound can both of these elements make?

Question to think about! How could you check if a substance was an element or a compound? oxygen hydrogen