Show:
endothermic/exothermic reactions
acid/base reactions
combustion reactions
law of the conservation of mass
misc
100
a reaction that absorbs energy from the surrounding atmosphere.
What is an endothermic reaction?
100
a scale that measures how acidic or alkaline a substance is.
What is the pH scale?
100
a reaction that occurs when a fuel (substance that reacts with oxygen) reacts with oxygen to produce heat.
What is a combustion reaction?
100
the law that states that mass cannot be created nor destroyed.
What is the law of the conservation of mass?
100
is a pillow a metal or a non-metal?
What is a non-metal?
200
a reaction that releases energy into the atmosphere.
What is an exothermic reaction?
200
tastes bitter and has a pH above 7.
What is a base?
200
true or false? cars use combustion in their engines to power themselves.
What is true?
200
true or false? substances in reactions always weigh exactly the same after the experiment.
What is false?
200
a mathematical process in which two chemical equations of opposite sides have balanced chemical amounts.
What is balancing chemical equations?
300
a reaction used in the engines of cars to propel the car further.
What is an exothermic reaction.
300
tastes sour and has a pH below 7.
What is an acid?
300
this ((thermic)) reaction is associated with combustion.
What is an exothermic reaction?
300
what type of ((thermic)) reaction is photosynthesis?
What is endothermic?
400
an indicator that displays the acidity or how alkaline a substance is in colours.
What is a universal indicator?
400
two substances that result from combustion.
What is water and carbon dioxide?
400
who discovered this law?
What is antoine lavoisier?
400
scientist who coined the term of 'endothermic' reactions.
Who is Marcellin Berthelot?
500
a reaction usually associated with combustion.
What is an exothermic reaction?
500
dishwashing detergent is classified in this category.
What is alkaline?
500
true or false? is this equation a representation of combustion? hydrocarbon + nitrogen → carbon dioxide + water
What is false?
500
in a reaction, this is where the difference of mass has gone.
What is air in the atmosphere?
500
the age difference between antoine and his wife.
What is 15 years?