week 3.1
poor conductor and metallic
(metalloids)
this process is an example of a chemical change because a new substance with new properties forms.
(iron rusting)
example of sugar dissolving is a
(chemical change)
objects rub against each other and produce heat
(friction)
A magnet sticking to a refrigerator is an examples of
non-contact force
force created by moving electrical charges
(magnetism)
apples falling from a tree is an example of
(noncontact force)
has the same composition throughout.
(homogeneous mixture;)
process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature
(conductivity)
a mixture of two or more substances that are evenly distributed throughout, and the composition is the same throughout. appears uniform/pattern.
homogenous mixture
able to be drawn out into a thin wire for electricity
(ductile)
can be observed or measured without changing the identity of the matter
(physical change)
particles tightly packed together
(solid)
if an object is less dense it will
(float)
is composed of only one type of element or compound, meaning it has a consistent composition throughout
pure substance
change in temperature and signs of bubbling
(chemical reaction)
last two rows on the bottom of period table
(rare earth metals)
made up of only one type of particle, like an element (single type) or a compound (two or more elements)
(pure substance)
force that depends on the objects' masses and the distance between them
(gravity)
what type of force would be pulling on a dogs leash
contact force
pushing a stroller is an example of
(contact force)
middle and left side of periodic table
(metals)
located on the far right of the period table
(nonmetals)
if an object is more dense it will
(sink)
two properties that make a metal a good choice to use as a wire in electronics
ductility, conductivity