Lesson 4-5 test quiz for sci Flashcards
Ion
An atom or group of atoms with a +/- charge
polytechnic ion
a ion made of more than on atom
molecule
Neutral group of atoms joined by a covalent bond
indicator
a compound that changes color in the presence of an acid or base
salt
the ionic compound made from neutralization of an acid with a paces
neutralization
A reaction of an acid with a base, yielding a solution that in not as acidic or base as the starting solution were.
solution
a liquid in which one chemical has been dissolved into another.
pH
a measure of a solution acid or alkalinity
carbon dioxide
a colorless, odorless gas produced by all animals when the oxygen they inhale reacts with the carbon-rich foods the have eaten.
climate change
Long - Term significant change in the climate of Earth. It can happen naturally or in response of human actives, like burning fossil fuels and clearing of forest.
hydrogen
The lightest element in the universe. As A gas it is colorless, odor less and flammable. Its integral part of many fuels, fats and chemicals make up living tissues.
bleach
a dilute from of the liquids , sodium hypochlorite, that is used around the home to lighten and brighten fabrics, to remove stains or kill germs.
Alkaline
An adjective that describes a chemical that produces hydroxide ions in a solution. It has a pH higher then 7.
What is a ionic bond
A ionic bond is where a atom lose or gains electrons
What is a covalent bond
A covalent bond is where to atoms share electrons
