Calculate the speed for a car which covers a distance of 220km in 2 hours.
Speed = 110km/h
In a state of rest or moves at a constant velocity unless it experiences an unbalanced force.
Inertia and/or
Newtons First Law
Give the formula for FORCE.
Force = mass x acceleration
Change in speed with direction.
Velocity
Identify the element
Fe
Iron
Calculate the distance covered by a train that is travelling at 110km/h for 4.5 hours.
D = S x T
= 110 x 4.5
= 495 km
The acceleration of an object is dependent on the applied force and mass of the object.
Which law applies?
Newtons Second Law
Give the acceleration for a car which experiences a force of 120 000 N and has a mass of 1500kg.
a = F/m
a = 120 000 /1500
a = 80km/h-2
An increase in speed/velocity over time.
NaCl
a) Identify the compound
b) Give the common name for the above compound.
Sodium chloride
Salt
Give the mass of a train which experiences a force of 420 000 N and has an acceleration of 10m/s.
m = F/a
m = 420 000 / 10
m = 42 000kg
Every action has an equal yet opposite force.
1) Which law applies here?
2) Identify a situation where this occurs.
1) Newtons 3rd Law
2) Sitting down, Swimming, Standing on bathroom scales.
Give the formula for
Force?
Acceleration?
Mass?
Force = mass x acceleration
Acceleration = Force/mass
Mass = Force /acceleration
Time taken to respond.
Give the average rt.
Reaction time
0.1 - 0.3 seconds
Na+1 Cl-1
Balanced = zero charge
Calculate the time taken for a plane to cover a distance of 10 500km if its average speed is 900km/h.
T = D/S
T = 11.67 hours
T = 11 hours and 44 minutes.
An object moves at a constant velocity.
a) Which law applies?
b) Give an example where this may occur.
a) Newtons First Law
b) Driver-less trains
Balance the following compound to reach a zero overall charge.
Al+3 O-2
2 Al+3 3 O-2
a) Name given for an insoluble solid.
b) Give an example of a neutralisation reaction.
a) Precipitation
b) NaOH + HCl --> NaCl + H2O
2Fe + O2 ----> 2FeO
a) Identify the type of reaction.
b) Identify the reactant(s).
c) Identify the product.
a) Corrosion
b) Iron and Oxygen
c) Iron oxide
Balance the following compound to reach a zero overall charge.
Mg+2 OH-1
Give the name of the compound formed.
Identify the metal and non-metal.
Balance the following compound to reach a zero overall charge.
Mg+2 2 OH-1
Give the name of the compound formed.
Magnesium hydroxide
Metal = Magnesium Non metal = hydroxide
Identify three factors that may affect reaction time.
Give the average reaction time.
0.1 - 0.3 seconds
Balance the following compound to reach a zero overall charge.
Al+3 Cl-1
Give the name of the compound formed.
Identify the metal and non metal.
Al+3 3 Cl-1
Give the name of the compound formed.
Aluminium chloride
Identify the metal and non metal.
Metal = Aluminium Non-metal = Chlorine
a) A fuel reacts with oxygen. Identify the type of reaction given.
b) Scientific name for rust formation.
c) Type of reaction that occurs when we react;
Mg + 2HCl --> MgCl2 + H2
a) Combustion
b) Corrosion
c) Acid and Metal
CaCO3 + 2HCl ----> CaCl2 + CO2 + H2O
a) Identify the type of reaction.
b) Identify the reactant(s).
c) Identify the product.
Carbonate and acid reaction
Calcium carbonate and hydrochloric acid
Calcium chloride, Carbon dioxide and water