Energy
This is the energy stored in the battery.
chemical
What is sound?
a form of energy caused by vibrations
What is the pH level of an acid?
0-6
What is a new substance made in a chemical reaction?
product
Name an example of a decomposer.
bacteria, fungi,
__________energy is transferred in wires of a circuit
electrical
Which medium does sound travel the fastest? solid, liquid, or gas? Why?
Solid, closely packed particles
What is a substance that has a pH level of 10?
alkali
Give one observation showing a chemical reaction
bubbling, gas produced, change in color
What do decomposers feed on?
dead organisms
Identify the energy change in a ball rolling down a hill
What is an echo?
A reflected ound
What is the hazard symbol that tells you it can poison you?
toxic
Thia is a substance that you start with in a chemical reaction.
reactant
What is the name of the first organism in a food chain?
producer
Give one example of energy transformation.
Answers may vary
How does echolocation in bats work?
What is a substance that is neither acid nor alkali?
neutral
It is the changing an acid or an alkali into a solution at pH 7
neutralisation
What are omnivores?
consumers eat plants and other animals
What is energy dissipation?
When energy spread out into the surroundings in a way that cannotbe recovered
Can sound travel in a vacuum? Why?
There's no medium, no particles where sound can travel through
What is a substance that changes to a different colour in acid and alkali?
indicator
How is precipitate formed?
when 2 soluble reactants produce an insoluble substance
Construct a food chain with four consumers.
answers may vary