Chemistry Test 1 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Physical property | observed with the senses |
Physical change | a change in size, shape, or state;no new substance |
Chemical property | indicates how a substance will react with something else; matter will be changed into new substance |
Chemical change | a change in the chemical and physical properties; new substance is formed |
Kelvin= | Celsius + 273 |
Celsius= | Kelvin - 273 |
exothermic | releases heat |
endothermic | process absorbs heat and cools the surroundings |
chemical reaction | a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form |
product | The substances that result from this recombination of atoms |
reactant | written on the left side, in a similar manner to a math equation |
density | Density is the mass of a substance per unit volume. |
mass | Mass is a measure of the amount of matter in a substance or an object. |
matter | Matter is all the “stuff” that exists in the universe. |
quantity | the amount or number of a material or immaterial thing not usually estimated by spatial measurement. |
volume | the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great. |
weight | the name of the force exerted on an object due to the acceleration of gravity. |
allotrope | each of two or more different physical forms in which an element can exist. Graphite, charcoal, and diamond are all allotropes of carbon. |
atom | the smallest component of an element, characterized by a sharing of the chemical properties of the element and a nucleus with neutrons, protons and electrons. |
element | a substance whose atoms all have the same number of protons |
molecule | a complete chemical unit |
acid | A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. |
base | A substance that produces OH (aq) ions in aqueous solution. Strong soluable bases are soluble in water and are completely dissociated. Weak bases ionize only slightly. |
compound | A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements. |
mixture | A sample of matter composed of two or more substances, each of which retains its identity and properties |
ion | An atom or a group of atoms that carries an electric charge. |
inorganic compound | any compound that does not both carbon and hydrogen together |
organic compound | any compound that contains both carbon and hydrogen together |
pH | a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid, and higher values more alkaline. |
chemical bond | The attractive forces that hold atoms together in elements or compounds. |
energy | The capacity to do work or transfer heat. |
heat | the sum of the total of kinetic energy of the particles in a sample of the matter |
kinetic energy | energy a moving object has because it is in motion |
potential energy | energy an object has because of its location |
specific heat | the amount of heat energy required to raise the temperature of 1g of a substance by 1 kelvin |
system | an integrated whole, composed of diverse, interacting, specialized structures and subfunctions. |
temperature | A measure of the intensity of heat |
hypothesis | a testable question/problem |
theory | a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained. |
scientific law | statement based on repeated experimental observations that describes some aspect of the universe. |
accuracy | How closely a measured value agrees with the correct value. |
precision | how close multiple results are to each other |
solid | definite shape/volume - molecules tightly packed - vibrate in place |
liquid | definite volume; variable shape - moderately packed - flow over each other |
gases | indefinite shape/volume - spread far apart - rapid random motion |
reactants | to the left of the arrow |
products | to the right of the equation |
KHDBDCM | kilo, hecto, deka, base, deci, centi, milli |
density = | mass/volume |
heterogeneous mixture | can be separated from one another. |
homogeneous mixture | a solid, liquid or gaseous mixture that has the same proportions of its components throughout a given sample |
activation energy | the amount of energy needed to make an object begin movement |
law of conservation of energy | energy can neither be created nor destroyed |
% of error= | theoretical-experimental / theoretical X 100 |
Created by:
Kolby_Furr91301
Popular Chemistry sets