sci vocab
Terms
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- molecule
- neutral particle formed when atoms share electrons
- infer
- to draw a conclusion base on observation
- theory
- the best explanations that have been found so far
- earth science
- study of Earth systems and systems in space, including weather and climate systems, and the sudy of nonliving things such as rocks, oceans, and planets
- actinide
- the second series of inner transition elements which goes from thorium to lawrencium
- polar bond
- bond resulting from the unequal sharing of electrons
- chemical formula
- combination of chemical symbols and #'s that indicates which elements and how many atoms of each element are present in a molecule
- constant
- variable that is not changed in an experiment
- system
- a set of objects or parts that form a whole
- Pascal's principle
- states that when a force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid
- noble gas
- element in group 18 of the periodic table
- life science
- study of living systems and how they interact
- ion
- atom that is no longer neutral b/c it has gained or lost an electron
- ionic bond
- attraction that holds oppositely charged ions close together
- scientific law
- a rule that describes a pattern in nature but does not try to explain why something happens
- controlled experiment
- involves changing one factor and observing its effect on one thing while keeping all other things constant
- pressure
- force exerted on a surface divided by the total area over which the force is exerted
- covalent bond
- chemical bond formed when atoms share electrons
- hypothesis
- reasonable guess that can be tested and is based on what is known and what is observed
- physical science
- study of matter, which is anything that takes up space and has mass, the study of energy
- electron dot diagram
- chemical symbol for an element, surrounded by as many dots as there are electrons in its outer energy level
- independent variable
- factor that is intentionally varied by the experimenter
- group
- family of elements in the periodic table that have similar physical or chemical properties
- science
- a systematic way of learnig more about the natural world
- dependent variable
- factor that may change as a result of changes purposely made to the independent variable
- chemical bond
- force that holds two atoms together
- Archimedes' principle
- states that the buoyant force of an object is equal to the weight of the fluid displaced by the object
- data
- info gathered during an investigation; recorded in the form of descriptions, tables, graphs, or drawings
- technology
- use of scinece to help people in some way
- catalyst
- substance that can make something happen faster but is not changed itself
- metallic bond
- bond formed when metal atoms share their pooled elctrons
- evaporization
- vaporization that takes place at the surface of a liquid
- buoyant force
- upward force exerted on an object immersed in fluid
- variable
- factor that can be changed in an experiment
- density
- mass divided by volume