Test 10 - chapter 6 Flashcards
The halogen that is added to toothpaste and drinking water
fluorine
Most metals are…
solid
A very hard metal which is an important ingredient in stainless steel
nickel
The densest of the everyday metals
lead
The element that is the basic building block of all the compounds
carbon
The semimetal that is used to make computer chips
silicon
The only metal that is liquid at room temperature
mercury
anything that takes up space and bass mass
matter
the two particles that make up the nucleus of an atom
protons and neutron
The measure of the pull of gravity on an object
weight
The metric unit that is used to measure an object’s mass
gram or kilograms
the amount of matter that makes up an object
mass
the tiny particles that swarm at tremendous speeds around the core of an atom
electrons
the amount of matter in one unit of volume
density
the tiny, extremely dense core at the center of an atom
nucleus
the tiny particles of which all matter is composed
atoms
The halogen that is useful as a bleach and a germ-killing agent
chlorine
The colorless, odorless gas that makes up 78% of the earth’s atmosphere
nitrogen
The halogen that is added to table salt to prevent a deficiency disease
iodine
the elements which do not combine with anything else except under unusual circumstances
noble gases
highly reactive elements that tend to form compounds with alkali and alkaline earth metals
halogens
the organized arrangement of all known elements
periodic table of the elements
the simplest kind of atom with one proton and one electron
hydrogen
the study of what substances are made of and how one substance can be changed into another
chemistry
formed by electrons that are in orbit the same distance from the nucleus
shell
the most abundant element at the surface of the earth
oxygen
the number of protons an atom has
atomic number
lacking an electrical charge
neutral
formed by electrons zooming around the nucleus of an atom
electron cloud
The three main groups of elements
metals, nonmetals, semimetals
two or more atoms firmly bound together
molecule
what changes when an object changes from place to place
the weight changes
Iodine when heard does not melt it does this, or turns to gas
sublimes
If two objects have the same volume but different densities. the object made of the denser substance will weigh…
more
Protons have what kind of charge?
positive
a substance composed of one or more types of atoms bonded together
compound
a substance that is composed of only one type of atom
element
two electrons ________ each other (repel or attract)
repel
A neutral atom has an ______ number of protons and electrons
equal
a proces in which atoms of elements or compounds are rearranged to form new substances
chemical reaction
a compound made of molecules
molecular compound
the hardest of all known substances
diamond
the rapid reaction of any substance with oxygen
combustion
a compound made of charged atoms
ionic compound
