Shared Flashcard Set

Details

Chapter 1 Matter
chapter 1
40
Science
7th Grade
09/21/2006

Additional Science Flashcards

 


 

Cards

Term
Properties you observe without changing it to another substance are called a __________ __________.
Definition
physcial property
Term
Properties you observe when a substance changes into a different substance is called a ____________ _______________.
Definition
chemical property
Term
A substance that cannot be broken down into any other substances by chemical or physical mean is an ________.
Definition
element
Term
A substance made of two or more elements that are chemically combined is a ______________.
Definition
compound
Term
Two or more substances in the same place that are not chemically combined (they can be separated) is a ________.
Definition
mixture
Term
An alteration in appearance that does not convert the material to a new substance is a _________ ________.
Definition
physical change
Term
A change in matter that forms one or more new substances (can't be changed back) is a __________ __________.
Definition
chemical change
Term
Give 2 examples of chemical changes.
Definition
burning
rusting
Term
Give 2 examples of a physical change.
Definition
water freezing
breaking boulders into small stones
Term
The core of an atom that contains the protons and neutrons is the __________.
Definition
nucleus
Term
The positively (+) charge particle in an atom is ___________.
Definition
proton
Term
The negatively (-) charged particle in an atom is an_________.
Definition
electron
Term
The part of an atom that has no charge at all and is in the nucleus is a ________.
Definition
neutron
Term
The number that tells how many protons and electrons and atom has is it's ______ ________.
Definition
atomic number
Term
Atoms of the same element with different numbers of neutrons are called _________.
Definition
isotopes
Term
The layers of electrons around the nucleus of an atom are called ________.
Definition
shells
Term
The number of electrons in the outermost shell of an atom is called a _________ __________.
Definition
valence electrons
Term
What are groups on the Periodic Table also called and what do they have in common?
Definition
columns or families and they all have similar properties
Term
What are periods in the Periodic Table also called?
Definition
rows
Term
Where are metals on the Periodic Table located?
Definition
to the left of the zig zag line
Term
Where are nonmetals located on the Periodic Table?
Definition
to the right of the zig zag line
Term
Where are metalloids located on the Periodic Table?
Definition
On either side of the zig zag line
Term
Name some physical properties of metals.
Definition
hardness,
shininess (luster),
malleability,
ductility,
magnetic,
conductivity,
Term
Name some chemical properties of metals?
Definition
how reactive,
corrosion
Term
What is an alloy?
Definition
A mixture of two or more elements that has the properties of a metal.
Term
What are the Alkali metals?
Definition
The most reactive metals.
Term
Where are the Alkali metals located on the periodic table?
Definition
Group 1
Term
What are the Alkali Earth metals and where are they located on the periodic table?
Definition
the 2nd most reactive of the metals and they are located in Group 2
Term
What are the transition metals and where are they located on the periodic table?
Definition
They are the bridge between the most reactive metal and the least reactive metals. They are Groups 3 thru 12.
Term
What are the lanthanides where are they located on the periodic table?
Definition
Lanthanides are soft, malleable,shiney metals with high conductivity. They are at the bottom of the table in the top row.
Term
What are the Actinides and where are they located on the periodic table?
Definition
Actinides are the most unstable of elements, they are very rare and found at the bottom of the table in the bottom row.
Term
An element that lacks most of the properties of a metal is called a ________.
Definition
nonmetal
Term
An element that lacks most of the properties of a metal is called a ________.
Definition
nonmetal
Term
Name some physical properties of nonmetals.
Definition
some are gases
solids are dull and brittle
Term
What are some chemical properties of nonmetals?
Definition
Most of them form bonds with other atoms except for Group 18.
Term
What are the Carbon, Nitrogen and Oxygen families?
Definition
Carbon - Group 14
Nitrogen- Group 15
Oxygen - Group 16
Term
Tell what the halogen family is and what does its name mean.
Definition
Very reactive and start with Fluorine and go to Astatine. Halogen means salt-forming.
Term
Why are the Noble gases so chemically stable?
Definition
Because their outer shell of their atoms is full.
Term
What is a metalloid?
Definition
They have properties of metals and nonmetals.
Term
What is matter?
Definition
Anything that has weight and takes up space.
Supporting users have an ad free experience!