Matter, Elements, Chapter 1 Flashcards
(a) A number used as a multiplier in a scientific notation or (b) a number preceding a chemical formula in a chemical equation.
Coefficient
A change involving the reaction of one or more substances to form one or more new substances; the chemical identity of the substances is changed.
Chemical Reaction
Chemical Formula
A representation showing both the identity and the number of elements in a compound.
A chemist shorthand for representing a chemical reaction. It shows reactants and products, and often chemical conditions necessary for the reaction.
Chemical equation
The force of an object of a given mass due to gravity.
Weight
The amount of space occupied by a substance.
Volume
Temperature
A measure of the hotness or coldness of a substance. The three scales of temperature in use are Celsius, Fahrenheit, and Kelvin.
State of matter
The physical form in which a substance exists, either solid, liquid, or gas.
The amount of heat needed to raise the temperature of exactly 1g of a substance by exactly 1*C
Specific heat capacity
Specific gravity
The ratio of the density of a substance to the density of water.
A state of matter composed of particles that have an orderly arrangement in very little motion, giving the substance a definite shape and a definite matter.
Solid
The digits in any measurement that are known with certainty plus the first estimated digit
Significant figures
Atom
The smallest unit of matter that can exist and keep its chemically unique characteristics
The substance(s) that react(s) to form different substance(s) in a chemical reaction; shown on the left side of a chemical equation.
Reactant
A sample that contains only one type of substance for which a chemical symbol or formula can be written
Pure substance
A state of matter composed of particles that are loosely associated and freely moving, given the substance definite volume but no definite shape.
Liquid
Kinetic energy flowing from a warm body to a colder one
Heat
A chemical substance made up of two or more elements that are chemically joined together
Compound
The simplest type of matter; a pure substance composed of only one type of atom
Element
Kinetic energy
The energy of motion
Matter is neither created or destroyed, it merely changes forms.
Law of conservation of mass
What subatomic particle has no charge?
Neutron
A student student selects a small, metal sphere with a mass of 1g to represent an electron. What mass would represent a proton?
2000g
All atoms of a given element must have
the same atomic number
