Matter
the state that collides together
liquid
sugar added to Lemond is what kind of mixture
homogenous
elements are on the zigzag line are called
metalloids
which would an egg float in ?
ocean water (salt)
lake water (fresh)
which description would not be a sign that a new substance was formed?
Change in thermal energy
Production of gas
color changeChange in texture
change in texture
the state that moves freely
gas
mixtures you can see are
heterogenous
which element will conduct electricity ?
A. Hydrogen
B. Sulfur
C. Copper
D. Carbon
copper
if you are observing if something sinks or floats you are observing its
density
a new formation is formed when two or more substances are mixed together, what are sign that a new formation occurred?
change in color
temperature change
formation of a gas (bubbles),
formation of a precipitate (a solid from liquids), or production of light or odor
the state that is tightly packed and vibrates against each other
solid
how would you know if there was a solution present?
(a substance dissolved)
two or more components and has uniform composition.
the element is Bromine is a
metal
nonmetal
metalloid
nonmetal
which would float on water
ice- 0.82
milk- 1.2
ice- 0.82
when temperature increases or decreases that is a sign of what kind of change?
chemical
Liquids have ______________volumes, while gases do ____ ________ fixed volumes.
fixed, not fixed
after a substance is dissolved it is called
a solution
properties of a metalloid are
Semiconductor Lustrous
Brittle Solid
Hard
for something to sink it is
more dense
evidence of bubbles is a sign of what kind of reaction ?
chemical
put the states of matter in order in terms of kinetic energy
solid- lowest
liquid- medium
gas- highest
how to identify what is NOT a homogenous mixtures
substances are NOT evenly distributed.
the element silicon is a metal, nonmetal, or metalloid ?
metalloid
for something to float it is
less dense
true or false
a change in temperature of a substance is a chemical change
true