Energy
This form of energy is stored in food and fuel
Chemical Energy
This is the pH value of a neutral substance
Ph7
This is the term for how fast or slow a chemical reaction happens
Rate of reaction
A student reacted calcium chloride and water together. The student noticed a rise in temperature. Is this an example of an exothermic or endothermic reaction?
Exothermic.
A huge ball of gas that gives off heat and light. Our sun is an example.
A star
A toaster changes electrical energy into this form of energy
Heat Energy
This common household liquid is an acetic acid? You might put in on Fish and chips
Vinegar
Increasing this factor makes particles move faster and react more quickly
Temperature
Is the burning of a candle an example of a physical or chemical change?
Chemical Change.
A natural object that orbits a planet.
Despite the nursery rhyme, a cow can’t jump over it.
Moon
This law states that energy cannot be created or destroyed
Law of conservation of Mass
This natural indicator turns red in acid and green in base.
Red cabbage
Why does powdered marble react faster than marble chips with acid?
Larger surface area
Temperature, Catalyst, Particle Size, and Nature of Reactant are 4 of the 5 factors that effect a rate of reaction. Name the 5th one.
Concentration
This is the reason we have different seasons on Earth
The tilt of the earths axis
What is the unit for energy?
Joule
This is what you call the chemical reaction when an acid and a base are mixed
Neutralisation
This substance speeds up a chemical reaction but is not used
Catalyst
What is the type of reaction that absorbs energy, which makes it seem like heat is being absorbed by the products formed.
Endothermic.
This is the main difference between a meteor and an asteroid.
an asteroid orbits the Sun in space, while a meteor enters Earth’s atmosphere and burns up.
A lamp uses 2000J of electrical energy. 1500J is used as light energy. What energy is wasted as heat energy in Kilojoules?
500J but only 0.5kJ
What is the name of the equipment that the acid goes in? It is tall and long and normally made of glass
A burette
On a graph of reaction rate, what does a steep slope mean
Fast rate of reaction!
In order for a chemical reaction to occur, the reactants must reach the required amount of energy. What is this called?
Activation Energy.
Name the planets in order from the Sun
What are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune