• Home

  • Documents

  • Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented...
8
Chemistry for the gifted and talented 1 Atoms, elements, molecules, compounds and mixtures Student worksheet: CDROM index 01SW Discussion of answers: CDROM index 01DA Topics Atoms, elements, molecules, compounds, mixtures, structure and different representations of bonds and atoms. Level More able 11–13 year old students. Prior knowledge The differences between elements, mixtures and compounds. Rationale This activity is designed to help students clarify the relationship between various parts of their knowledge in these topics and develop the skill of using Venn diagrams in organising their understanding. Venn diagrams are a method of organising your thoughts like lists or mind maps. The particular advantage of Venn diagrams is that they clearly show the interconnection or overlap between categories. For example, a substance may be molecular and an element, or molecular and a compound. A reaction may be feasible and proceeds at room temperature, or feasible but not occur because of high activation energy. They also show where characteristics are mutually exclusive: this substance, if a compound, cannot be an element. Different representations of atoms and molecules are used to show that there are several different ways that they can be visualised.

Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

  • Upload
    lyduong

  • View
    226

  • Download
    3

Embed Size (px)

Citation preview

Page 1: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Chemistry for the gifted and talented 1

Atoms, elements, molecules, compounds andmixtures

Student worksheet: CDROM index 01SW

Discussion of answers: CDROM index 01DA

Topics

Atoms, elements, molecules, compounds, mixtures, structure and different representations

of bonds and atoms.

Level

More able 11–13 year old students.

Prior knowledge

The differences between elements, mixtures and compounds.

Rationale

This activity is designed to help students clarify the relationship between various parts of

their knowledge in these topics and develop the skill of using Venn diagrams in organising

their understanding.

Venn diagrams are a method of organising your thoughts like lists or mind maps. The

particular advantage of Venn diagrams is that they clearly show the interconnection or

overlap between categories. For example, a substance may be molecular and an element,

or molecular and a compound. A reaction may be feasible and proceeds at room

temperature, or feasible but not occur because of high activation energy. They also show

where characteristics are mutually exclusive: this substance, if a compound, cannot be an

element.

Different representations of atoms and molecules are used to show that there are several

different ways that they can be visualised.

Page 2: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Use

The activity could be used as an extension activity for students at any stage after the main

topics listed have been taught. It could be used as a follow up to a lesson on compounds

and mixtures.

To extend the ideas here, students could be asked to think of other substances to be added

to the diagram or to design a new Venn diagram for elements (with subsets: metals, non-

metals, metalloids, gases, solids, liquids etc).

Chemistry for the gifted and talented2

Page 3: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Chemistry for the gifted and talented

Student worksheet 01SWAtoms, elements, molecules, compounds and mixtures

Page 1 of 4

Atoms, elements, molecules, compounds and mixtures

Venn diagrams can be used to show relationships between categories. For example, the Venn

diagram below shows that mammals are never reptiles, all members of the cat family are mammals,

some reptiles and mammals are herbivores but no members of the cat family are. It shows that snakes

are reptiles, and lions and tigers are part of the cat family.

1. What does the arrow from the sheep show?

................................................................................................................

................................................................................................................

................................................................................................................

.........................................................................................................................................................

continued on page 2

Animals

Mammals

Cat familyReptiles

Herbivores

snakes

lionstigers

Stud

ent

wor

kshe

et

Page 4: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Chemistry for the gifted and talented

Student worksheet 01SWAtoms, elements, molecules, compounds and mixtures

Page 2 of 4

A student tried to show the relationship between atoms (on their own), elements, compounds,

mixtures and molecules. The student drew the following Venn diagram.

The student’s Venn diagram contains several errors.

2. List the mistakes in the Venn diagram.

.........................................................................................................................................................

.........................................................................................................................................................

.........................................................................................................................................................

3. Design your own version to show the true relationship between these categories.

continued on page 3

Substances

Mixtures

CompoundsElements

Molecules

Atoms(on their own)

Page 5: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Chemistry for the gifted and talented

Student worksheet 01SWAtoms, elements, molecules, compounds and mixtures

Page 3 of 4

4. Write in the names of all the substances at the bottom right of the page into the region of this

Venn diagram where they belong. Draw arrows from the drawings in boxes to show to which

category they belong. Some examples have been done.

continued on page 4

Ar

O C OO S O

H H

H H

NN

OO

Ne

Ne

Air

Ammonia (NH3)

Crude oil

Helium gas (He)

Phosphorus (P4)

Water (H2O)

Oxygen (O2)

Chlorine (Cl2)

Nitrogen (N2)

Sulfuric Acid (H2SO4)

Substances

Mixtures

Compounds

Molecules

Atoms(on their own)

Elements

Page 6: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

5. A student drew a Venn diagram in a different style and incorporated a category for giant

structures. Write in the names of all the substances at the bottom of the page into the region of

the diagram where they belong. Draw arrows from the drawings in boxes to show to which

category they belong.

Chemistry for the gifted and talented

Student worksheet 01SWAtoms, elements, molecules, compounds and mixtures

Page 4 of 4

Mixtures Compounds

Elements

Giant

Atoms

Iron

Sand (SiO2)

Diamond

Ethanol (C2H2OH)

Sodium chloride (NaCl)

Limestone (CaCO3)

Bromine (Br2)

Diesel

Vegetable Oil

Molecule

Diamond and HCl drawings: Chemical misconception: Diagnosis and cure, Spot the bonding available at www.chemsoc.org/networks/lrannet/miscon2.htm

Page 7: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

Chemistry for the gifted and talented

Discussion of answers 01DAAtoms, elements, molecules, compounds and mixtures

Page 1 of 2

Atoms, elements, molecules, compounds and mixtures

1. The arrow shows that the sheep is a herbivore a mammal and not a member of the cat family.

2. The problems with the student’s Venn diagram are:

• atoms on their own are all elements;

• compounds are not mixtures; and

• not all molecules are compounds, some are elements – eg O2.

3. The Venn diagram in question 4 is a good answer to question 3

4. The answers are shown below. Can you think of more examples to test your friends where they

should go on the diagram?

continued on page 2

Dis

cuss

ion

of a

nsw

ers

Substances

Mixtures

Compounds

Molecules

Atoms(on their own)

Ar

O C O

O S OH H

H H

NN

OO

Ne

Ne

Air

Ammonia

Crude oil

Helium

Phosphorus

WaterOxygen

Chlorine

NitrogenSulfuric Acid

Elements

Page 8: Atoms, elements, molecules, compounds and · PDF fileChemistry for the gifted and talented Student worksheet 01SW Atoms, elements, molecules, compounds and mixtures Page 1 of 4 Atoms,

5. The substances with giant structures tend to have melting points. The answers are shown

below. Can you think of more examples to test your friends where they should go on the

diagram?

Chemistry for the gifted and talented

Discussion of answers 01DAAtoms, elements, molecules, compounds and mixtures

Page 2 of 2

Mixtures Compounds

Elements

Giant

Atoms

Molecule

Iron

Sand

Diamond

EthanolSodiumChloride

Limestone

Bromine

Carbonmonoxide

Vegetable oil

Diesel

Carbon monoxideis on the answer

sheet but it was notpart of the student

question.Is this right?


+ Ionic Compounds Write down the stuff in red. + Atoms vs. Molecules vs. Compounds ATOMS are the smallest particles of any element that is still that

+ Ionic Compounds Write down the stuff in red. + Atoms vs. Molecules vs. Compounds ATOMS are the smallest particles of any element that is still that

Documents
Atoms, Molecules, Elements, Compounds, and Mixtures

Atoms, Molecules, Elements, Compounds, and Mixtures

Documents
Atoms, Elements, Molecules and Compounds

Atoms, Elements, Molecules and Compounds

Documents
Chapter 2 - Elements, compounds and mixtures-+Elements...Chapter 2 - Elements, compounds and mixtures Elements Atoms — the smallest particles Molecules Compounds More about formulae

Chapter 2 - Elements, compounds and mixtures-+Elements...Chapter 2 - Elements, compounds and mixtures Elements Atoms — the smallest particles Molecules Compounds More about formulae

Documents
The Classification of Matter: Atoms, Elements, Molecules and Compounds

The Classification of Matter: Atoms, Elements, Molecules and Compounds

Documents
Elements & Compounds - sci.sdsu.edu · Elements & Compounds . Atoms (Elements) Molecules (Compounds) Cells Elements & Compounds . Nucleus Electrons Cloud of negative charge (2 electrons)

Elements & Compounds - sci.sdsu.edu · Elements & Compounds . Atoms (Elements) Molecules (Compounds) Cells Elements & Compounds . Nucleus Electrons Cloud of negative charge (2 electrons)

Documents
What are atoms, elements, molecules, and compounds? SPS2: Students will explore the nature of matter

What are atoms, elements, molecules, and compounds? SPS2: Students will explore the nature of matter

Documents
Atoms and Elements Molecules and Compounds A Review For U Pages 800 – 803 and beyond…

Atoms and Elements Molecules and Compounds A Review For U Pages 800 – 803 and beyond…

Documents
Ionic/Covalent Compounds Characteristics & Counting Atoms/Molecules

Ionic/Covalent Compounds Characteristics & Counting Atoms/Molecules

Documents
Molecular Compounds Writing Names and Formulas. Molecular Compounds l Molecular compounds are made of molecules. l They are made by joining nonmetal atoms

Molecular Compounds Writing Names and Formulas. Molecular Compounds l Molecular compounds are made of molecules. l They are made by joining nonmetal atoms

Documents
Particles Atoms and Compounds and Molecules, Oh My!

Particles Atoms and Compounds and Molecules, Oh My!

Documents
Atoms, Elements, and Compounds Chapter Fifteen: Molecules and Compounds 15.1 Compounds and Chemical Bonds 15.2 Electrons and Chemical Bonds

Atoms, Elements, and Compounds Chapter Fifteen: Molecules and Compounds 15.1 Compounds and Chemical Bonds 15.2 Electrons and Chemical Bonds

Documents
Chapter 2 Atoms, Molecules and Ions - Texas A&M … 2 Atoms, Molecules and Ions 21 Naming Ionic Compounds 41. Names for the ionic compounds (a) K2S potassium sulfide (b) CoSO4 cobalt(II)

Chapter 2 Atoms, Molecules and Ions - Texas A&M … 2 Atoms, Molecules and Ions 21 Naming Ionic Compounds 41. Names for the ionic compounds (a) K2S potassium sulfide (b) CoSO4 cobalt(II)

Documents
Chapter 2: Molecules, Ions, and Compounds MACROSCOPIC SCALE Elements combine to make compounds. ATOMIC SCALE Atoms combine to make molecules, or extended

Chapter 2: Molecules, Ions, and Compounds MACROSCOPIC SCALE Elements combine to make compounds. ATOMIC SCALE Atoms combine to make molecules, or extended

Documents
Atoms, molecules, elements, compounds, substances, mixtures

Atoms, molecules, elements, compounds, substances, mixtures

Documents
Molecules and Ions. Chemical bonds Atoms are held together in compounds by chemical bonds

Molecules and Ions. Chemical bonds Atoms are held together in compounds by chemical bonds

Documents
Chapter 3:Elements combine to form compounds · Covalent Compounds Atoms combine by sharing electrons to form molecules. Molecules: a group of atoms held together by sharing one or

Chapter 3:Elements combine to form compounds · Covalent Compounds Atoms combine by sharing electrons to form molecules. Molecules: a group of atoms held together by sharing one or

Documents
Molecules and Compounds. Atoms Molecules Cells

Molecules and Compounds. Atoms Molecules Cells

Documents
Chemical)Formulae)of)Molecular)Compounds)Chemical)Formulae)of)Molecular)Compounds) Because)molecular) compounds)are)made)from) molecules,)and)molecules) are)made)from)atoms,) molecular)compounds)are)

Chemical)Formulae)of)Molecular)Compounds)Chemical)Formulae)of)Molecular)Compounds) Because)molecular) compounds)are)made)from) molecules,)and)molecules) are)made)from)atoms,) molecular)compounds)are)

Documents
Atoms, Elements, Molecules, & Compounds - Denton ISD...Elements/Atoms/Molecules Because elements are substances that CANNOT be broken down into simpler substances –a molecule of

Atoms, Elements, Molecules, & Compounds - Denton ISD...Elements/Atoms/Molecules Because elements are substances that CANNOT be broken down into simpler substances –a molecule of

Documents
Atoms Molecules and Compounds

Atoms Molecules and Compounds

Documents
Atoms, elements, molecules, compounds Basic Chemistry …. But this is Biology?????

Atoms, elements, molecules, compounds Basic Chemistry …. But this is Biology?????

Documents
CSO 202A Atoms Molecules and Photons - IIT Kanpurhome.iitk.ac.in/~madhavr/cso202A.pdf · CSO 202A Atoms Molecules and Photons ... transformed the N-cycle Nitrogen compounds are also

CSO 202A Atoms Molecules and Photons - IIT Kanpurhome.iitk.ac.in/~madhavr/cso202A.pdf · CSO 202A Atoms Molecules and Photons ... transformed the N-cycle Nitrogen compounds are also

Documents
hcawhite.weebly.com€¦  · Web viewExplain the difference between atoms, molecules, and compounds. Atoms: simplest form of matter which retains properties. Molecules: two or more

hcawhite.weebly.com€¦  · Web viewExplain the difference between atoms, molecules, and compounds. Atoms: simplest form of matter which retains properties. Molecules: two or more

Documents
C3 Atoms, elements & compounds 3.5: Molecules & Covalent bonds 3.6: Giant Structures Req-giant structure

C3 Atoms, elements & compounds 3.5: Molecules & Covalent bonds 3.6: Giant Structures Req-giant structure

Documents
Unit.02.Elements and Compounds. Atoms, Molecules & Ions.lecture

Unit.02.Elements and Compounds. Atoms, Molecules & Ions.lecture

Documents
Chapter 2.3: Chemistry of Cells Biochemistry. Organic Compounds Organic molecules are molecules that contain Carbon atoms bonded usually to Hydrogen,

Chapter 2.3: Chemistry of Cells Biochemistry. Organic Compounds Organic molecules are molecules that contain Carbon atoms bonded usually to Hydrogen,

Documents
Chapter 2 Atoms, Molecules, & Ions. Atomic Theory Elements composed of atoms Atoms can’t be changed Compounds of multiple atoms John Dalton

Chapter 2 Atoms, Molecules, & Ions. Atomic Theory Elements composed of atoms Atoms can’t be changed Compounds of multiple atoms John Dalton

Documents
Topic 2 Atoms, Elements, Molecules, Ions, and Compounds

Topic 2 Atoms, Elements, Molecules, Ions, and Compounds

Documents
ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS

ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS

Documents