Question | Answer |
suspension ex. | carbon dioxide, water, ammonia |
colloid ex. | milk
jello
pudding |
do the elements in a compound keep their properties? | NO |
ratio | a # that is like a fraction tht shows how the amount of 1 thing compares to the amount of something is used. |
how do compound combine? | in set ratios |
How do i know if it is a comound? | the items in the substance are chemically combined |
reaction | when 2 or more substances chemically combine some ex. of reaction
explosion
light
heat |
mixture def | when 2 or more substances are mixed together but are not chemically combined. |
mixture ex | pizza
kool aid
jello
milk
italian dressing
muddy water |
do mixture have ratios? | NO |
Distallation | a process tht seperates based on boiling points |
magnet | a tool used to seperate mixtures that have iron or magnet metals in them |
do substances in a mixture keep their properties? | yes you can taste both salt and water in a mixture of salt water |
centrifuge | a tool that spins test tybes really fast |
periodic table | the list of every known element |
compound def. | a pure substance made of 2 or more elements chemically combined |
what are examples of metalloids? | silicon
boron
antimony |
is a metalloid a mixture? | no it is an element |
matalloids def/properties | elements that can be shiny and conduct when mixed with other things. |
what sre some examples of nonmetals? | oxygen and carbon |
nonmetal def/properties | an element that is dull brittle and a bad conductor |
solution ex. | a heterogeneous mixture that has big pieces the pieces either can settle out or can be filtered |
element def. | a pure substance that cannot be seperated |
pure substance def. | a substance with only one type of particle |
pure substance examples | elements and compounds |
can a pure substance be broken down into simpler substances? | yes compounds it can with only chemical changes though |
most elements belong to what category? | metals |
metal def./properties | an element that is shiny malleable and a good conductor of electricity. |
what are the 3 categories of an element? | metal nonmetal and metalloid |
characteristic properties ex. | boiling point
melting point
density |
characteristic properties def. | properties that do not depend on the amount of material |