Acid and base 8-1

Neutral solution pH

7

Alkali pH

More than 7

concentrated

Sci: (of a substance or solution) present in a high proportion relative to other substances. Pure and not including any other substances such as water or any diluting chemicals. ELI5: A very strong version of something that is not watery. Example: ________ acids can be very harmful because they are much stronger and can burn/dissolve things including our skin/flesh.

element

Sci: A Substance that cannot be broken down into other substances. ELI5: A thing that cannot be divided anymore. Ex: Hydrogen, Helium, Lithium

hydrogen

Sci: A colourless and highly flammable gas, the chemical element of atomic number 1. ELI5: Lightest chemical element that has a chemical symbol

dilute

Sci: A solution is _______ if it has a small number of solute particles per unit volume (litre or cubic metre) ELI5: Makes a liquid weaker,thinner by adding water

compound

Sci: A substance made up of atoms of two or more elements, strongly joined together. ELI5: Something made up of two or more elements. Ex: Salt, Water, etc.

litmus

Sci: An indicator. Blue _______ paper goes red on adding acid. Red _______ paper goes red on adding alkali. ELI5: Paper used to indicate the acidity and alkalinity of a substance. Example: blue litmus paper, red litmus paper

neutral

Sci: Belonging to neither kind, An object that does not have a positive or negative charge. Netiher acidic or alkaline.

metal

Sci: Elements on the left of the stepped line of the periodic table. Most elements are made of this. They are good conductors of energy and electricity. Eli5: It is part of the periodic table and they are good conductors for energy and electricity

corrosive

Sci: If a substance is ________, it can burn your eyes and skin Example from chapter: If you have a _________ sloution, it can burn your skin and eyes, so to protect against this solution, we wear eye protection and keep the solution off from our skin as possible

neutralization

Sci: In a ____________ reaction, an acid cancels out a base or a base cancels out an acid ELI5: Acids reacting to substances which cancels it out. The pH would get closer to 7

alkalis

Sci: Is a soluble base ELI5: A thing that is opposite of acids and feel soapy. Example from chapter: Toothpaste, soap solution, ect

salt

Sci: It is a compound that forms when an acid reacts with a metal element or compound. ELI5: When an acid reacts with a metal element/compound, it becomes _____________. Example from chapter: Sodium Chloride is the _________ you may add to food.

universal indicator

Sci: It is a mixture of dyes that changes colour to show the pH of a solution. ELI5: It is a mixture of dyes that changes colour to show how alkaline or acidic a solution is.

pH scale

Sci: Measurement of how acidic or alkaline a liquid is EL15:How much acid or alkali there is inside liquid Example: Stomic acid will have a ________ of 1 and water have a _______ of 7

acids

Sci: Solution with pH value less than 7 ELI5: a substance that has a sour taste and sometimes dangerous Example from chapter: Lemon, vomit, vinegar, coca cola ....

indicator

Sci: ________ is used to find out whether a solution is acid or alkaline ELI5: Finding rather a solution is acid or alkaline

base

Sci: a substance that neutralizes the an acid. ELI5: something that cancels out the acid. Example: Some ________ are soluble in water

taste sour

Sci:A felling from your tongue Example from chapter: the taste when you lemon or vinegar, usually acid will have this property

Acid pH

less than 7

The stronger the alkali

pH # gets bigger

The stronger the acid

pH # gets smaller

Acid + Metal

salt + hydrogen

acid + alkali

salt + water