HOMEOSTASISWhat is homeostasis?

Temperature controlYour body needs to be kept at a c_______ temperature, particularly at your core, which contains all the important o_____. Heat is produced during r________ and lost to the a____.

Heat strokeWhat causes heat stroke?

What are the symptoms of heat stroke?

How is heat stroke treated?

HypothermiaAt what temperature can hypothermia start?

What are the symptoms of hypothermia?

How is hypothermia treated?

How does it work?

The skin and brain have temperature r______. The b____ is the processing centre. S______ helps you cool down. S______ and the hairs standing up keeps you w____.

What are enzymes?

What do we call the model that is used to explain how enzymes work?

Draw a graph to show what happens to enzyme activity as temperature increases?

temperature

activity

What happens to enzymes at high temperatures? ______________

Enzymes

How do control systems work?

How does your body gain water?• • •

How does your body lose water?• • • •

Water balance

Excess amino acids are broken down by the l_____ and excreted by the k______. All s_____, and some w_____ are reabsorbed.

partially permeable membrane

What is a partially permeable membrane?

Name 3 things that move in or out of cells:

What is osmosis?

Osmosis

Control s_____ keep conditions constant. They have r_____ to detect s_____. The processing c_____ decides what r______ is needed and send instructions to the e______.

Chemical Patterns

Atomic structure

Label parts of the atom:

Particle Charge

ElectronProtonNeutron

Complete the table: Na23

11

Sodium as shown in periodic table. Label proton number and mass number:

How many electrons are there in sodium?

Alkali metalsWhich group are the alkali metals in the periodic table? ________What happens to reactivity as you go down the group? __________________________Why are the called the alkali metals? ____________________ __________________________Complete the word equation:

Metal hydroxide

+metal W____ + H____

What are the reactants for this reaction? __________________

Hazard symbols

What is the meaning of this hazard symbol?

Flame testComplete the table with the flame colours:

Element Flame colour

LithiumSodiumPotassiumCalciumcopper

How can the colour emitted be analysed? _______________If a compound gives out a green flame what metal is likely to be in it? ______________

Periodic tableWhat is a row called in the periodic table? _______

Where are the metals found in the periodic table? ________

HalogensComplete the table about halogens:Element

Symbol Appearance

flourine

bromine

Cl

I

Yellow gasGreen gasBrown liquid

Black solidWhich group are the

halogens?_______________________What happens to reactivity going down group? __________ ________________________

Electron arrangementWhat is maximum number of electrons in first shell?_______Second shell? ________Draw a sodium atom (proton number11):

Ions and ionic compounds_____ are formed when atoms lose of gain electrons. Metal atoms lose electrons to form _______ ions. Non-metals gain electrons to form _______ ions. Ionic compounds form ______ because opposite charges attract. crystals ions positive negative

What is another property of an ionic compound?_____________________________________

Chemical equationsWrite a word equation for carbon reacting with oxygen:

Explaining Motion

Distance-time graph

Where was the car moving fastest? ______

When is the car not moving? ______

What is the speed between A and B? ______

Velocity-time graph

ForcesWhat are forces measured in? ___________For every force there is a force that is equal and acting in opposite direction. What is this force known as? _________What is the force that opposes motion? ______

SpeedUse formula to calculate speed.

• Calculate the speed for a car that went a distance of 125 miles in 2 hours time.

_____________________• How much time does it take for

a bird flying at a speed of 45 miles per hour to travel a distance of 1,800 miles?

_____________________

s

d

t

Resultant force

The resultant force is the overall force acting on an object. Calculate the resultant force:

What happens to the speed of an object when the forces are unbalanced?

500N 200N

MomentumThe momentum of an object is effected by m_____ and v______. In a car crash we try to reduce the f_____ acting on passengers. Airbags, seat belts and crumple zones do this by slowing d_____ the change in m_______

WorkComplete the formula:Work done = f____ X d_____ (j____)A force of 10N is applied to a box to move it 2m along the floor. What is the work done on the box?

What do we mean by conservation of energy?

Conservation of energy

What is the object doing when the graph is flat? _________What is the object doing when the graph is sloped?_________When is the car returning to its start point? _________

Keywords:AcceleratingDeceleratingSteady

Kinetic energyKinetic energy = 1/2 x mass x speed2

What is the kinetic energy of a 2 kg dog running at 6 m/s?

Gravitational potential energy

Change in GPE= weight x change in height

What is the change in gravitational potential energy (GPE) when a 1kg mass is raised from 1m above ground to 3m above ground?