Describing Matter
Dissolving salt in water is a type of _______ change
physical
The measure of how much matter an object contains
mass
subatomic particles with a positive electric charge
protons
A measure of the amount of mass in a given amount of volume
density
a type of matter that is made up of one or more of the same kind of atom chemically combined
element
If you describe methane as a gas that easily catches fire, what type of property are you describing?
chemical property
The measurement of the gravitation force on an object
weight
A subatomic particle with no electric charge
neutron
the temperature at which a substance changes from a solid to a liquid
melting point
a type of matter made up of different kinds of atoms chemically combined
compound
Lemonade consists of several substances that are NOT chemically combined, so lemonade is classified as a _______?
mixture
Anything that has mass and takes up space
matter
Elements that have properties between those of metals and nonmetals
metalloids
the shine that a metal has
luster
A classification of matter that contains a variety of elements and compounds that are not chemically combined
mixture
A property that describes a substance's ability to change into a new substance
chemical property
The amount of space that an object takes up
volume
The term that describes the number of protons in the nucleus of an atom
atomic number
the ability of a substance to dissolve in another substance
solubility
A substance that has definite physical and chemical properties, and is the same no matter where you find it
pure substance
How do liquid water, ice, and water vapor differ from each other?
they are different states of matter
How do you calculate the density of an object?
divide its mass by its volume
What gas makes up nearly 80% of the atmosphere?
nitrogen
the ability of a substance to be rolled or pounded into various shapes
malleability
A mixture that has substances uniformly mixed throughout it
homogenous