Atoms, elements, molecules, compounds and (原子、元素和分子化合物).pdf,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,
Molecules Elements Periodic Table Natural elements Synthetic or man-made elements Compounds Mixtures Atoms An atom is a basic unit of matter that consists of a central nucleus surrounded by negatively charged electrons. The nucleus contains protons and neutrons. Electrons revolve around the nucleus in ...
Examples of molecules containing one element are hydrogen, nitrogen, oxygen, and fluorine. On the other hand, compounds are substances containing different elements combined in a simple ratio according to the combining powers or valencies of the constituents. Some examples of compounds that are ...
ELEMENTS-- What are elements? About the Periodic Table of Chemical Elements. COMPOUNDS AND MOLECULES-- What is a compound? What is a molecules? Examples of compounds. 3-D structure of molecules. STATES OF MATTER-- An interactive activity about the states of matter: solid, liquid gas, plasma...
How are Mixtures Different to Molecules and Compounds? Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Recommended Lessons and Courses for You Related Lessons Related Courses Common Elements Lesson for Kids: Names & Symbols Elements...
Molecules, being composed of bonded atoms, can undergo chemical reactions as well. The nature of these reactions depends on the types of atoms involved and the bonds between them. Molecules can react to form new compounds, break apart into their constituent atoms, or rearrange their atomic compos...
If you know where a certain element sits in the table, and you know a little bit about the properties of the elements above, below, and either side, you can often figure out what the properties of that element will be.How do atoms make molecules and compounds? Atoms are a bit like ...
The most common diatomic molecular elements are Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine. Phosphorus exists as a molecule with four atoms. Sulfur is a ring of eight atoms. You should memorize the elements that are diatomic molecules. Not all compounds are molecules. ...
-composed of 2 elements-ionic & covalent compounds included Binary Ionic Compounds -metal-nonmetal-contain both + and - ions (anions and cations)-arranged in 3D structures (lattices) Binary Covalent Compounds (also called molecular compounds)-nonmetal + nonmetal-consist of discrete molecules Empirical...
2.3Atoms and molecules 2.3Atomsandmolecules Review Whatispuresubstance Apuresubstanceconsistsofonlyonesubstance.Whichoneispuresubstance?oxygenSodiumchloride Elements:substancesthatcannotbechemicallybrokendownintosimplersubstances.Compounds:puresubstancesmadefromtwoormore,elementschemicallycombined together.Elementsand...