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