Praxis 5005 Science- Physical Science
Matter - answer Anything that has mass and takes up space
Atom - answer Smallest unit of matter
Atoms are made up of - answer protons, neutrons, and electrons
Protons - answer Positively charged particles, at the center, or nucleus, of an atom
Neutrons - answer the particles of the nucleus that have no charge
Electrons - answer Negatively charged particles that orbit the nucleus
Charged atoms are called - answer Ions
Cations - answerPositively charged ions, there are more protons than electrons
Anions - answerNegatively charged ions, there are more electrons than protons
Atomic mass - answerNumber of protons and neutrons in an element
Isotopes - answerAtoms of the same element that have different numbers of neutrons.
Unstable isotopes - answerRadioactive, emit radiation as they decay
Stable isotopes - answerIsotopes that have stable nuclei and do not emit radiation.
The periodic table is arranged by - answerAtomic number
Molecule - answerTwo or more atoms bonded together
Compound - answerA substance of 2 more elements
Valence electrons - answerelectrons that can be gained, lost, or shared in a chemical
reaction
Atoms can join by - answerSharing or exchanging valence electrons
Covalent bond - answerA chemical bond formed when two atoms share electrons
Ionic bond - answerA chemical bond resulting from the attraction between oppositely
charged ions.
Matter - answer Anything that has mass and takes up space
Atom - answer Smallest unit of matter
Atoms are made up of - answer protons, neutrons, and electrons
Protons - answer Positively charged particles, at the center, or nucleus, of an atom
Neutrons - answer the particles of the nucleus that have no charge
Electrons - answer Negatively charged particles that orbit the nucleus
Charged atoms are called - answer Ions
Cations - answerPositively charged ions, there are more protons than electrons
Anions - answerNegatively charged ions, there are more electrons than protons
Atomic mass - answerNumber of protons and neutrons in an element
Isotopes - answerAtoms of the same element that have different numbers of neutrons.
Unstable isotopes - answerRadioactive, emit radiation as they decay
Stable isotopes - answerIsotopes that have stable nuclei and do not emit radiation.
The periodic table is arranged by - answerAtomic number
Molecule - answerTwo or more atoms bonded together
Compound - answerA substance of 2 more elements
Valence electrons - answerelectrons that can be gained, lost, or shared in a chemical
reaction
Atoms can join by - answerSharing or exchanging valence electrons
Covalent bond - answerA chemical bond formed when two atoms share electrons
Ionic bond - answerA chemical bond resulting from the attraction between oppositely
charged ions.
