PS Final Study Guide 1

area of rocky objects between Mars and Jupiter

Process which light nuclei combine to form a heavier nucleus.

Positively charged atom that consist of two protons and two neutrons

one of the highly dense planets nearest to the Sun

distance Earth is from the Sun (92,955,820 mi.)

the substance that dissolves in the solvent

Process which an unstable nucleus emits energy

two or more substances combine to form a new substance.

any of the bodied that orbit the sun or a similar body that orbits another star

the sum of all space, matter, and energy that ever was, is, or will be

large celestial body composed of gas and emitting light

a single compound breaks down to form two simpler substances.

planet with a deep, massive atmosphere.

substance that forms in a chemical reaction.

substance that increases the number of hydroxide atoms when dissolved in water

collection of stars, dust, and gas bound together by gravity.

distance light travels in a year

factor the enzyme works on

large cloud of dust and gas in interstellar space.

Mixture where the amount of each substance is different.

mixture where the amount of each substance is the same

substance that goes into a chemical reaction.

Minimum mass needed to sustain a nuclear chain reaction

Electromagnetic energy from gamma radiation that has no mass

substance that increases the number of hydronium atoms when dissolved in water.

the sun and all of the other planets and objects that orbit around it

High energy photon emitted by nucleus during fission and radioactive decay

Time required for half of a radioactive substance to decay

one element or radical takes the place of another in a compound.

groups of stars the show patterns

change in position relative to a reference point.

an ion with a positive charge

explosion in which a massive star collapses and throws its outer layers into space

the study of the stars (the original science)

object so dense and massive that not even light escapes

Charged electron emitted during certain types of radioactive decay

Bond formed by the attraction of one atoms nucleus to the others electrons

Ion with a negative charge

substance that speed up the rate of a chemical reaction

Bond formed when atoms share one or more electrons

protein that speeds up metabolic reactions in plants and animals

Process which a nucleus splits and releases energy

smaller objects that strike the Earth

substance in which the solute dissolves.

theory that all matter in universe was compressed, then exploded

exchange of atoms or ions between two compounds.

Bond formed by the attraction of oppositely charged ions

oxidation reaction of an organic compound in which heat is released.

value used to express the acidity or alkalinity of a solution

homogeneous mixture of 2 or more substances uniformly dispersed