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Chemistry Vocabulary Web
Transcript of Chemistry Vocabulary Web
the fundamental building
blocks of matter Atoms are the smallest units of an element that maintain the chemical identity of that element. These particles are what make up elements and compounds An element is a substance that can't be broken down further into anything smaller or simpler. It is made up of only one type of atoms. E.g. hydrogen, oxygen, etc. A compound is a substance that can be broken down into smaller and simpler substances. It is made from the atoms of two or more elements that are chemically bonded. e.g. H2O or Table Salt (NaCl) Density or There are different properties of matter Boiling Point A property is something
that defines an entire set
of substances. Extensive Intensive Properties can be either intensive or extensive. These properties depend on
the amount of matter present These properties do not depend
on the amount of matter present These are examples of
extensive properties. These are examples of
intensive properties. Physical properties Chemical properties Different Branches of Chemistry Inorganic Studies non- carbon based matter Organic Studies carbon-based compounds Biochemistry Studies chemicals found in organisms Physical Studies properties and energetics involved in change Analytical Studies the composition and components of materials Theoretical Tries to explain or predict chemical behavior, often by means of physics States of Matter Solid Liquid Gas Plasma has no defined shape
has defined volume
has more energy than as a solid
has more molecular movement than a solid has a defined shape
has a defined volume
has less energy than as a liquid or gas
has less molecular movement than a liquid or gas has no defined shape
has no defined volume
has more energy than as a solid or liquid its molecules are packed close together just able to vibrate
its particles have strong attractive forces between them holding them in their positions its particles can temporarily overcome their attractive forces allowing them to flow its molecules bounce around
its particles' attractive forces have less of an effect than in a solid or liquid the atoms lose most of their electrons Increase in energy content Plasma
Solid high temperature
the atoms lose most of their electrons What is Chemistry? Chemistry is the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes. Using these methods of research, we find out about things like... are characteristics that can be observed or measured without changing the identity of the substance Some examples are melting and boiling point A change in a substance that does not involve a change in the identity of the substance is called a physical change Are physical changes of a substance from one state to another relate to a substance’s ability to undergo changes that transform it into different substances For example, the ability of charcoal (carbon) to burn in air is a chemical property A change in which one or more substances are converted into different substances is called a chemical change or chemical reaction the amount of matter present the amount of 3 dimensional space the matter occupies Can be a... Pure Substance Mixture or Elements Compounds Homogeneous Heterogeneous uniform in composition throughout not uniform in composition throughout Solutions homogeneous mixtures can also be called... mixtures can be or or made of one type of atom made from the atoms of two or more elements chemically bonded Pure substances are... The substances that undergo the chemical change are called reactants. The substance or substances formed as a result of the chemical reaction are called products.