A value written as a simple number multiplied by a power of 10
Back
RELEVANT
Front
Providing evidence to prove or disprove an issue or question
Back
CONCENTRATED
Front
A solution with a large amount of solute dissolved in the solvent. (Supersaturated)
Back
ELECTRONS
Front
The negatively charged subatomic particles located in the region surrounding the nucleus of an atom known as the electron cloud
Back
ATOM
Front
The smallest part of all matter
Back
DIMENSIONAL ANALYSIS
Front
A method of multiplying a given result by a conversion factor to change it from one unit of measure to another.
Back
LIQUIDS
Front
Have a definite volume but no definite shape; take the shape of the container
Back
DEPENDENT VARIABLE
Front
The responding variable that occurs as a result of the experiment. It is the result of the independent variable. Y-axis
Back
NEUTRONS
Front
A subatomic particle located in the nucleus of an atom that has no charge
Back
TEMPERATURE
Front
A measure of the average kinetic energy (motion) of all the particles within an object
Back
NUCLEUS
Front
The center of the atom
Back
PROTONS
Front
The positive subatomic particle located in the nucleus of an atom
Back
ACCURATE
Front
Free from error
Back
DATA
Front
Information that is gathered from research or experimentation
Back
MIXTURES
Front
A physical change, which involves combining two or more substances that DO NOT chemically react.
Back
SCIENTIFIC INVESTIGATION
Front
An experiment with a single independent and dependent variable
Back
CONTROLS
Front
Experimental conditions that are not changed in order to test the independent variable
Back
ATOMIC MASS
Front
A number located on the Periodic Table that gives the approximate mass of the nucleus, which is a combination of the protons and neutrons
Back
HYPOTHESIS
Front
A prediction based on observations and inferences stated in terms of an independent and dependent variable that can be tested.
Back
CONDUCTIVITY
Front
The ability to transfer energy as heat or electricity between particles
Back
PHASE CHANGES
Front
The change from one state of matter to another involves a change in potential energy of the particles (distance or position), not kinetic energy (motion) - examples- melting, freezing, boiling, evaporation, condensation, sublimation
Back
CRYSTAL
Front
A solid arranged in a repeating pattern
Back
MODEL
Front
A miniature representation of something; a description or analogy of something (like an atom) that cannot be directly observed.
Back
INDEPENDENT VARIABLE
Front
The variable that the experimenter changes (manipulates). X-axis
Back
CHEMICAL CHANGE
Front
Involves that creation of a new substance as a result of chemically combing two different substances
Back
GASES
Front
Have no definite shape and no definite volume
Back
SOLUTE
Front
A substance that dissolves in a solution
Back
KINETIC THEORY OF MATTER
Front
Describes how matter is arranged according to state and energy level
Back
SOLVENT
Front
The substance that dissolves the solute to make a solution
Back
CONVERSION FACTOR
Front
a ratio equal to one that expresses the same quantity in two ways
Back
HOMOGENEOUS MIXTURE
Front
A mixture in which one substance dissolves in another. The mixture remains combined upon standing.
Back
SAFETY PROCEDURES
Front
Established ways of doing things while conduction scientific experiments to ensure that no harm occurs to the experimenters
Back
PHYSICAL PROPERTIES
Front
Properties that can be determined without permanently changing the substance
Back
VOLUME
Front
A measure of space, such as the capacity of a container
Back
HETEROGENEOUS MIXTURE
Front
A mixture that does not evenly combine/mix. One substance does not dissolve in another. The mixture will separate upon standing.
Back
TECHNOLOGY
Front
The application of science to meet human needs
Back
ISOTOPE
Front
An atom of the same element that has the same number of protons but a different number of neutrons
Back
DILUTE
Front
A solution with a small amount of solute dissolved in the solvent. (Unsaturated)
Back
FORMULAS
Front
Rules or principles expressed in symbols; symbolic expressions of the chemical composition of a substance
Back
TECHNOLOGICAL DESIGN
Front
The process of planning or making something to meet human needs
Back
PRECISION
Front
The degree to which an instrument can be read with certainty plus one digit- estimate
Back
PHYSICAL CHANGE
Front
A change in a physical property that does not change the make up of the substance
Back
SOLIDS
Front
Have a definite shape and volume
Back
PLASMA
Front
High energy, electrically charged particles that give off heat and light
Back
PURE SUBSTANCE
Front
An element of a compound
Back
ELEMENT
Front
A substance that cannot be broken down into simpler substances by chemical reactions
Back
ATOMIC NUMBER
Front
A number located on the Periodic Table that identifies the element and the number of protons and electrons
Back
CREDIBLE
Front
Offering reasonable evidence for being believed
Back
CHEMICAL PROPERTIES
Front
Properties that describe the behavior of matter when it reacts with other matter
Back
DENSITY
Front
An objects mass divided by its volume
Back
Section 2
(41 cards)
PH
Front
A measure of the hydronium ion concentration in a solution using a scale from 0-14, with 0 being the most acidic and 14 being the most base
Back
IONS
Front
A charged atom due to loosing or gaining electrons during bonding
Back
IONIC BOND
Front
A bond formed by the attraction between oppositely charged ions
Back
EXOTHERMIC REACTION
Front
a reaction that transfers energy from the reactants to the surroundings usually as heat; feels warmer
Back
IONIC COMPOUND
Front
The chemical combination between a metal and nonmetal
Back
CATALYSTS
Front
A substance that changes the rate of chemical reactions without being consumed or changed
Back
MECHANICAL ENERGY
Front
The sum of the kinetic and potential energy in a system
Back
NEWTON'S 2ND LAW OF MOTION
Front
Acceleration of an object equals the net force of that object divided by its mass
Back
BASE
Front
Class of compounds that taste bitter, feel slippery in water solutions, turn red litmus blue, and react with acids to form salts
Back
WORK
Front
The transfer of energy that occurs when a force makes an object move a distance
Back
COVALENT BOND
Front
A bond formed when atoms share one or more pairs of electrons
Back
ACCELERATION
Front
The change in velocity divided by the time interval in which the change occurred
Back
COVALENT COMPOUND
Front
The chemical combination between two or more nonmetals
Back
NEWTON'S 3RD LAW OF MOTION
Front
Forces come in pairs that are equal in size and opposite in direction
Back
PRECIPITATE
Front
A solid product that is created during a chemical reaction
Back
CHEMICAL FORMULA
Front
The symbols of the elements in a compound with subscripts showing their ratio, metals always are written first.
Back
CHEMICAL ENERGY
Front
The energy stored within atoms and molecules that can be release when a substance reacts
Back
POTENTIAL ENERGY
Front
Stored energy resulting from the position or condition of an object
Back
PERIOD
Front
A horizontal row of elements on the Periodic Table that have similar properties in terms of bonding
Back
NEUTRAL
Front
A solution in which the concentration of hydrogen ions and hydroxide ions are equal (pH of 7)
Back
ENERGY
Front
The ability to change or move matter
Back
CHEMICAL REACTION
Front
The process where elements and/or compounds interact with one another to form new substances
Back
ENDOTHERMIC REACTION
Front
A reaction in which energy is transferred to the reactants from the surroundings usually in the form of heat; feels cooler
Back
NEWTON'S 1ST LAW OF MOTION
Front
Objects in motion will stay in motion unless a net force acts on them
Back
DOUBLE REPLACEMENT REACTION
Front
A chemical reaction where two compounds change partners
Back
DECOMPOSITION REACTION
Front
A reaction in which one compound is broken down into two or more products.
Back
KINETIC ENERGY
Front
The energy of motion
Back
ACID
Front
Class of compounds whose water solutions taste sour, turn blue litmus red, and react with bases to form salts
Back
ENERGY LEVELS
Front
These make up the electron cloud. Only a certain number of electrons can remain in each level
Back
MOTION
Front
Change in position over time
Back
GROUP
Front
A vertical column of elements on the Periodic Table with similar properties; also called a family
Back
BALANCED CHEMICAL EQUATION
Front
An equation that uses chemical formulas and symbols to show the reactants (on the left) and the products (on the right) in a chemical reaction; numbers in front of the formulas (coefficients) are added to make the numbers of atoms equal
Back
VELOCITY
Front
A quantity describing both speed and direction
Back
SINGLE REPLACEMENT REACTION
Front
A chemical reaction in which a free element replaces an ion in a compound
Back
SYNTHESIS REACTION
Front
A reaction of at least two reactants that produce one product
Back
ELECTRICAL ENERGY
Front
The energy associated with the electrical charges, whether moving or at rest
Back
MASS
Front
The amount of matter in an object
Back
FORCE
Front
The cause of an acceleration, or a change in an objects velocity- a push or a pull
Back
VALENCE ELECTRONS
Front
The number of electrons found in the outer most energy level of an atom