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Science states of matter and atoms

Across
Ratio of the mass of a substance to the volume of the substance
The sum of the numbers of protons and neutrons of an atom
A subatomic particle that has a negative charge
The curve at a liquid's surface by which one measures the volume of the liquid
The change of a substance from a liquid to a gas
The amount of matter in an object
A subatomic particle that has a positive charge
The physical forms of matter, which include solid, liquid, and gas
A property of matter that describes a substance's ability to participate in chemical reactions
The state of matter in which the volume and shape of a substance are fixed
The number of protons in the nucleus of an atom
A change that occurs when one of more substances change into entirely new substances with different properties
The tendency of an object to resist a change in motion.
The state of matter that has a definite volume but not a definite shape
A region around the nucleus of an atom where electrons are likely to be found
The change of state in which a solid becomes a liquid by adding energy
Down
A measure of how hot or cold something is
A form of matter that does not have a definite shape or volume
Anything that has mass and takes up space
The change of state from a gas to a liquid
An atom's central region, which is made up of protons and neturons
The resistance of a gas or liquid to flow
A characteristic of a substance that does not involve a chemical change.
The amount of space taken up or occupied
A change of matter from one form to another without a change in chemical properties
The change of a substance from one physical state to another
A measure of the gravitational force exerted on an object
The conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure
The amount of force exerted per unit area of a surface
A subatomic particle that has no charge and is found in the nucleus of an atom
The smallest unit of an element that maintains the chemical properties of that element