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Listed under:  Science  >  Matter  >  Chemical reactions  >  Bonding (Chemistry)  >  Molecules
Collection

VisChem topic1: chemical bonding in pure substances in different states

This web page contains a collection of animations depicting copper, sodium chloride, water and oxygen at the molecular level. The animations show the arrangement of atoms, molecules and ions in solid, liquid and gaseous states as well as illustrating changes of state. Two animations demonstrate alternative methods of representing ...

Collection

VisChem topic 2: dissolution of an ionic salt

This web page contains a video clip, animations and student worksheets exploring the dissolving of ionic solids in water. The video clip has both filmed and animated scenes that compare the dissolving of sodium chloride with melting and show how the dissolving process can be represented by chemical equations. Important ...

Collection

VisChem topic 3: precipitation of an ionic salt

This web page contains a video clip, animations and student worksheets exploring the precipitation of silver chloride. The video has both filmed and animated scenes showing the process at observational and molecular levels. It explains how the reaction can be represented by a chemical equation.

Collection

VisChem topic 6: molecular structure, shape and polarity

This web page contains ten animations of molecules and compound ions as well as nine QTVR objects showing organic molecules. The animations rotate the molecules to show their structure fully. The QTVR objects can be manipulated by the user so that, as well as being rotated, different ways of modelling the molecules can be seen.

Collection

VisChem topic 7: intermolecular forces

This web page contains animations demonstrating situations in which dispersion forces, ion-dipole forces and hydrogen bonding occur. Several animations show hydrated ions, and the effect of hydration on dissolving and reaction rates is discussed in explanatory text. A document containing lesson plans and student worksheets ...

Collection

VisChem topic 8: chemical properties of water and aqueous solutions

This web page contains video clips, animations and student worksheets that investigate the chemical properties of water and aqueous solutions. The major topics cover the structure and bonding of water, acids and bases, dissolving, ionic solutions, precipitation and complexation.

Collection

VisChem topic 9: physical properties of water

This web page contains a video, animations and a student worksheet exploring the influence of structure and bonding on the physical properties of water. Two animations showing structure and bonding in oxygen are provided for comparison.

Collection

VisChem topic 10: reactions of carbon compounds

This web page contains animations showing reaction mechanisms for organic substitution, addition and elimination reactions. For most reactions there are two animations, one showing molecular models, and the other showing structural formulas with movement of electrons as bonds are rearranged.

Collection

VisChem topic 11: dynamic chemical equilibrium

This web page contains a video, animations and a student worksheet investigating the dynamic equilibrium associated with the iron(III) thiocyanate complex. The animations show important molecular-level segments from the video.

Collection

VisChem topic 12: acid-base reactions

This web page contains a video, animations and a student worksheet examining the proton-transfer reactions of acids and bases. Self-ionisation of water, acidity of hydrated metal ions, proton gain by ammonia molecules and proton loss from acetic acid are depicted. The animations show important molecular-level segments from ...

Collection

VisChem topic 14: structure and properties of carbon compounds

This web page contains QTVR objects showing aspects of the structure of selected organic molecules. The QTVR objects can be manipulated by the user so that, as well as being rotated, different ways of modelling the molecules can be seen.

Image

Water molecule showing polarity

This is a colour graphic representation of a water molecule. It depicts the structural formula of water superimposed on a space-filling model and an electron-density isosurface. The diagram is colour-coded to show the dipole nature of the molecule.

Moving Image

Nano-engineering: science fiction or reality?

Explore the amazing field of nano-engineering. Imagine being able to construct molecular-sized machines that could do specific tasks like carrying out nano-surgery on damaged cell structures in your body. Decide for yourself what might be possible and what might just be science fiction.

Moving Image

Awake the mind with caffeine chemistry

Caffeine is the world's most popular drug, but what is it and how does our body respond to its presence? Watch this clip to see the chemical structure of caffeine and the three compounds it metabolises into. Find out which receptor in the brain caffeine binds to, and the overall impacts it has on brain function and activity.

Interactive resource

Matter

This learning object provides simple animations that illustrate the nature of paper, water and the structure of the atom. There is a self test and also ideas for further research. These are accompanied by a timeline of discoveries about the atom, and a pdf document ‘Nanotechnology’. The object requires Adobe Flash Player ...

Interactive resource

Types of matter: elements and compounds

Select samples from an outdoor setting. Magnify the substances to atomic level so that the particles they consist of can be seen. Sort the substances into groups based on how the particles are arranged. Classify the substances as elements or compounds. For example, classify mercury as an element, and aspirin as a compound. ...

Interactive resource

Types of matter: compounds and mixtures

Select samples from an outdoor setting. Magnify the substances to atomic level so that the particles they consist of can be seen. Sort the substances into groups based on how many types of molecules they contain. Classify the substances as pure compounds or mixtures. For example, classify water as a pure compound and coffee ...

Teacher resource

Chemical reactions and organic compounds: teacher resource

This teacher resource provides a range of possible activities that cover aspects of the science continuum for the flow of energy and flow of matter in an ecosystem. This teaching resource provides a range of classroom activities that explore the concept of the flow of energy and flow of matter in an ecosystem, specifically ...

Image

Model of a glucose sugar molecule

This is a colour photograph of a model of a glucose sugar molecule. The model is composed of spheres representing the atoms in the molecule, and rods representing the bonds between the atoms. Glucose is a simple molecule consisting of three elements - carbon, hydrogen and oxygen. Carbon is shown by black spheres, hydrogen ...

Teacher resource

Chemical reactions and organic compounds: learning sequence

In this structured sequence of learning, there are five teaching and learning sessions that include example stimulus questions, images, interactive simulations, video footage and experiments. Chemical reactions and some formulas of organic compounds are introduced to students. Activities investigate chemical bonds and the ...