My Cards Flashcards
(15 cards)
What is a Mixture?
A mixture is when two or more substances are mixed together but are not chemically bonded.
How do you know when a chemical reaction has taken place?
It either changes Colour ,temperature changes or it starts to fizz.
What is an alkaline
An Alkaline is a compound that dissolves to give a solution with a ph higher than 7
How many groups are there in the periodic table?
there are 8 groups .A group is a vertical colunm.
What 3 things are needed to start a fire?
The things needed are Oxygen,,heat fuel.
What is released when fuels burn and what reaction is taken place?
Energy is released .The reaction taken place is an Endothermic reaction.
What is a fuel?
A fuel is a material that is used to produce heat or power such as coal,gas and oil.
What is a compound?
A compound is when two or more elemants combind.
What is Cellular respiration?
Cellular respiration is the chemical reaction in which glucose and oxygen are turned into water, carbon dioxide, and energy
What is a hydrocarbon?
A hydrocarbon is a compound of hydrogen and carbon,
What is a Endothermic reaction?
An endothermic reaction is where heat absorbs energy from its surroundings .
What holds an atom together in a compound?
The nucleus hold the atom toghether.
What is the equation for Methane
Methane+oxygen -carbon dioxide+water
What is a metal?
A metal is a typical material which is hard and shiny.
What is carbohydrase?
Carbohydrase is an enzyme that catalyzes the breakdown of carbohydrates into simple sugars
