chemistry study guide

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group 17 on the periodic table is called?

Halogens

Group 1 on the periodic table is called?

alkali metals

Group 2 on the periodic table is called?

alkaline earth metals

Matter is-

anything that has mass and volume.

An ___ is the smallest unit of an element that maintains the chemical identity of that element.

atom

An ___ is a pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom.

element

which state of matter has No Definite Shape or Volume?

gas

what is A mixture that does not appear to be the same throughout?

heterogeneous mixture

what is a mixture that appears to be the same throughout?

homogeneous mixture

which state of matter has definite Volume, No Definite Shape?

liquid

which class of elements has properties of both metals & non-metals?

metalloids

Which class of elements best conducts electricity?

metals

what is a physical combination of two or more substances.?

mixture

Group 18 on the periodic table is called?

noble gases

which class of elements conducts electricity the worst?

non-metals

ions differ by-

number of electrons

isotopes differ by-

number of neutrons

atoms differ by-

number of protons

A ___ Substance has a fixed composition—composed of just one type of particle (atom or molecule)

pure

which state of matter has definite Shape & Volume?

solid

Mass is-

the amount of three dimensional space an object occupies.

Volume is-

the amount of three dimensional space an object occupies.

Chemistry is-

the study of the composition of matter and the changes it undergoes.

Group 3 -12 on the Periodic table is called?

transition metals

pure substances are either compounds or elements. (TRUE OR FALSE)

true


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