Yellow Cards Flashcards
What is an endothermic reaction?
An endothermic reaction is one in which energy is taken in, usually as heat.
What is an exothermic reaction?
An exothermic is one in which energy is given out, usually as heat or light.
Explosion
Ice pack
Fireworks
Photosynthesis
Exothermic
Endothermic
Exothermic
Endothermic
OH
Hydroxide
SO4
Sulphate
NO3
Nitrate
CO3
Carbonate
Carbon dioxide
1-carbon 2-oxygen
Calcium carbonate
1-calcium 1-carbon 3-oxygen
Magnesium sulphate
1-magnesium 1-sulphur 4-oxygen
What do you need for the fire triangle to work?
Oxygen,fuel and heat.
Metal + chlorine becomes ... Metal + oxygen becomes ... Metal + sulphur becomes ... Metal + carbon + oxygen becomes ... Metal + sulphur + oxygen becomes ...
Metal chlorine. Metal oxide. Metal sulphate. Metal carbon dioxide . Metal oxygen sulphate.
What are the number of electrons in each of the first three shells?
2 electrons
8 electrons
8 electrons
What can be identified by the group number?
Atomic mass and the proton number.
What are the uses of noble gases?
Lamps, neon lights and magnets.
Which type of reactions - combustion or thermal decomposition - is exothermic?
Combustion
An element is made of…
An element is made of only one type of chemical element.
An atom is the…
An atom is the smallest particle of a chemical element.
What are the chemical symbol the magnesium, chlorine and sodium
Magnesium = Mg Chlorine = Cl Sodium = Na
