Chemistry Basics Terms
AtomA subunit of a single element that consists of a nucleus and electrons surrounding the nucleus.
Atomic NumberThe number of protons present in one atom. This number determines the identity of the element.
BeakersGlass containers that hold liquid or other material.
Bond StrengthThis is a phrase that is used to refer to how tight two atoms are holding on to each other.
Bunsen BurnerOpen flame heat source used in the lab.
Chemical Fume HoodA piece of equipment, commonly used in chemistry labs, that enables scientists to work with toxic or dangerous substances. It looks like a large box with a glass window; air is circulated inside of the box.
Chemical ChangeA transformation where the identity of a chemical is changed. For example, when two chemicals react together to make a new chemical, something profound has happened at the atomic level. Atoms have joined together in new ways to create a new substance.
Chemical CompoundMultiple atoms bonded, or "stuck," together. A chemical compound must consist of atoms from at least two different types of elements.
Chemical ReactionIn a chemical reaction, a chemical change must occur; the hallmark of any chemical reaction is the creation of a new substance. Physical changes can also occur during a chemical reaction.
ChemistryThe study of matter.
CombustibleAbility to burn.
CruciblePorcelain contain used to burn material since it can withstand high temperatures.
ElectronA negatively charged atomic particle.
ElementAn element is a pure substance that can be separated from other matter. In addition, it cannot be broken down further by chemical means.
Erlenmeyer FlaskContainer used in laboratory with narrow neck.
FlammableCapable of being on fire.
FunnelHas one wide end and one narrow end to cleanly transfer substances (usually liquid).
GlasswareAny container that is made from glass such as beakers or flasks.
Graduated CylinderA measuring cylinder used for accurate liquid or volume measurements.
HotplateSource of heat without open flame.
Materials Safety Data Sheet(MSDS) Documentation of chemicals that show safe practices and disposals of a chemical.
NucleusA positively charged center at the heart of an atom. The nucleus contains neutrons and protons.
Periodic TableA means of organizing all known existing elements. Elements are sorted into families based on common characteristics. The periodic table also provides a quick summary of the atomic makeup of any element.
Phase (or State) Of MatterThis is a phrase used to indicate whether a substance is in solid, liquid, or gaseous form.
Physical ChangeA change where the identity of the chemical does not change, but the phase does. For example, melting ice is an example of physical change because frozen H2O and liquid H2O are both still just H2O.
PipetteDevice to extract liquid; dropper like device.
ProcedureA step method of completing a task.
ProductThe chemical compounds resulting from a chemical reaction. In a chemical equation, the products are listed on the right hand side of the arrow.
ProtonA positively charged atomic particle. The number of protons in an atom determines the identity of the atom; for example, carbon atoms always have 6 protons.
RadioactiveMaterial with particles that emit from unstable nuclei.
ReactantThe chemicals that are present before a chemical reaction takes place. They react together to produce new chemical compounds. In a chemical equation, reactants are listed on the left hand side of the arrow.
RulesGuidelines to follow.
Testube HolderPlier- like devices to hold test tubes.
ThermometerDevice that measures the temperature of a substance.
TongsLarge metal Plier-like device used to pick up or hold hot objects.
WaftingSafety procedure to gain the odor of a chemical.
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