matter and molecules
Terms
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- periodic table
- a taloular arrangement of the elements according to their atomic numbers so that elements with simalar properties are in the ame column
- neucleus
- contains protrons and neutrons
- proton
- a particle with a positive electric charge
- chemical change
- amy change in which one or more new substances are formed
- model
- is a way to represent an object or to describe how a process takes place
- neutron
- a particle with no electric charge
- electron
- a particle with a negative electric charge
- polyner
- an organtic compound made up of mainly of a very long chain or chains of carbon compounds
- chemical symbol
- Is one or two letters that stand for the name of an element.
- neutraalization
- the reaction between an acid and a base
- salt
- a compound that can be formed when an acid reacts with a base
- photosynthesis
- is an important chemical reaction in plants that is used to pproduce energy for the plant
- chemical formula
- a representation of a substance using symbols for its constituent elements
- atomic number
- a number of protons in an atom of that element
- element
- a component or consituent of a whole or one of the part into which a whole may be resolved by a nalysis
- mixture
- two or more substance of wich a physical object consists or is composed
- solution
- the process by wich a gas, liqued, or soild is disapered
- nuclearfission
- to split apart
- physical change
- a change in size shape or state
- molecule
- the smallest physical unit of an element
- indicator
- a substance that changes color when mixed with an acid or a base
- ion
- an electrically charged atom
- radio active element
- made up of atoms whos nuclei break down, or decay
- compound
- composed of two pr more parts elements or ingredients
- molecule
- the smallest particle (one or more atoms) of a substance that has all the properties of that substance
- conservation of mass
- a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
- atom
- (physics and chemistry) the smallest component of an element having the chemical properties of the element
- matter
- that which has mass and occupies space