1
an abbreviation that represents an element
What is chemical symbol
pure substance that is made up of only one type of atom
What is element
most are solid recognizing by luster or shine, most are malleable, and good at conducting electric current
What is metals
subatomic particles that have a positive electric charge
What is protons
The basic building blocks of matter
What is atoms
an element is the NUMBER of protons int the nucleus of one of its atoms
What is atomic number
have no charge, found in necleus
What is neutrons
negatively charged and are much smaller than protons and neutrons
What is electons
element that have some properties of metals and some properties of non metals
What is a metalloid
poor conductors of electric current and energy as heat
What is a non-metal
a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity
What is pure substance
were molecules of diff. type stick together
What is adhesion
compounds can be classified as acidic, basic, or neutral by measuring a special numerical value
What is pH
particles made up of two or more atoms that are joined together chemically
What is a molecule
What is chemical property
a_____mixture is one that doesn't have a uniform composition
What is heterogeneous
contains a variety of element and compounds that aren't chemically combined with each other
What is a mixture
made up of to different kinds of atoms chemical combing
What is a compound
in a_____mixture the substances are evenly spread throughout
What is homogeneous
a characteristic of a substance that can be observed and measured
What is physical property
where molecules stick together of the same type
What is cohesion
a mixture in which particles of a material are spread throughout a liquid or gas but are too large to stay mixed without being stirred or shaken
What is suspension
one substance is dissolved in another substance
What is solution
particles particles are small and don't settle out quickly
What is colloid
how many brains cells does carter have (it is not what you think I would say, 16.85229954642)
What is about 284