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Chemistry

Across
A tentative explanation of related data used to predict results of more experiments
The quantity of matter in a sample
One reactant that undergoes chemical changes to become two or more different compounds
State of matter in which a substance is dissolved in water
A negatively charged particle
A type of reaction in which one substance replaces another that is in solution
Th force that bonds two atoms together by a shared pair of electrons
The systematic study of the structure and behaviour of the physical and natural world through observation and experiment
The smallest fundamental particle of an element that has the properties of that element
A positively charged particle
A charged particle
A pure substance composed of two or more elements that are chemically combined in fixed proportions
A change in a substance to another substance or substances
A neutrally-charged subatomic particle that is located in the nucleus of an atom
Down
A physical state of matter with a definite volume and shape
The quantitative relationship among reactants and products
A physical state of matter that has a defined volume but not a defined shape
Elements in Group VII of the periodic table
A pure substance that cannot be broken down into simpler substances; the most basic form of matter
An arrangement of elements in order of increasing atomic number
A chemical reaction whereby an element or compound reacts with elemental oxygen
The representation of a chemical reaction using the symbols of the elements and the formulas of compounds
The core of an atom containing neutrons, protons, and most of the mass
The sum of the number of protons and the number of neutrons in an atom
The average of the isotopic masses of al lo fthe naturally occurring isotopes
A characteristic of an element
An element or compound in an equation that undergoes a chemical reaction
A change in physical state or dimensions of a substance that does not involve a change in composition
The making of a new product by combining two reactants together
A negatively charged subatomic particle; located outside of the nucleus
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
A strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons
A region of space where electrons exist; organized by energy levels
A physical state that neither has a definite shape or definite volume
Anything that has mass and takes up space
A positvely charged subatomic particle located in the nucleus of the atom