science midterm
midterm exam
Terms
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- group
- family of elements in the periodic table that have similar physical or chemical properties
- metalloid
- element that shares some properties with metals and nonmetals
- critical thinking
- involves using knowledge and thinking skills to evaluate evidence and explanations
- molecule
- neutral particle formed when atoms share electrons
- alkali metal
- Elements in group one of the periodic table
- atomic number
- The number of protons in the atom's nucleus which defines different elements
- semi conductor
- element that does not conduct electricity as well as metal but conducts better that a nonmetal
- solid
- has a definite shape state of matter whose molecules vibrate in place, with little space in between, arranged in a regular pattern
- density
- The mass of an object divided by its volume
- constant
- factor that does not change in an experiment
- metal
- element that is generally shiny, somewhat malleable and hard, often a conductor of heat and electricity.
- pascals 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
- transition elements
- elements in groups 3 - 12 in the periodic table, all of which are metals
- prediction
- what you think will happen
- actinides
- the second series of inner transition elements which goes from thorium to lawrencium
- condensation
- the process of changing from a gaseous to a liquid
- chemical bond
- force that holds two atoms together
- science
- A body of knowledge about the natural world and a means of acquiring knowledge
- system
- a set of objects or parts that form a whole
- scientific law
- a rule that describes a pattern in nature but does not try to explain why something happens
- chemical formula
- combination of chemical symbols and numbers that indicates which elements and how many atoms of each element are present in a molecule
- evaporation
- the process by which water changes from liquid form to an atmospheric gas
- variable
- factor that can be changed in an expiriment
- noble gas
- elements in group 18 of the periodic table
- hypothesis
- reasonable guess and is tested on what one knows
- dependent variable
- a factor that may change as a result of changes purposely made to the independent tvariable
- physical science
- study of matter, which is anything that takes up space and has mass, and the study of energy, which is the ability to cause change.
- earth science
- the study of earth systems and systems in space including the study of climates and nonliving things
- atom
- (physics and chemistry) the smallest component of an element having the chemical properties of the element
- nonmetal
- brittle and is usually a gas at room temperature and poor conductor of electricity
- pressures formula
- pressure = force divided by pressure
- liquid
- a substance in the fluid state of matter having no definite shape but a definite volume and can flow from place to place
- data
- information gathered during an investigation; re corded in the form of tables, drawings, and graphs
- vaporazation
- change from a liquid to a gas
- theory
- contemplation, speculation, a looking at, things looked at