Food Tests
What substance do we use to test for starch?
Iodine
Name 3 nutrients that we need in our diet
Carbohydrates; proteins; fats; minerals; vitamins
What does the word "diet" mean?
Everything that we eat.
What do we call the shape that tells us the things we need for a fire?
Fire triangle
Name a pollutant given off when fossil fuels burn.
Carbon dioxide; carbon monoxide; soot; sulfur dioxide
Which nutrient do we test for by rubbing it on filter paper?
Fats
Which nutrient(s) give us energy?
Carbohydrates and fats
What do we call the variable we change?
Independent variable
What is a "fire extinguisher"?
Something that puts out fires.
When sulfur dioxide dissolves in the clouds, what type of rain is produced?
Acid rain
Which substance is used to test for sugars?
Benedict's solution
Give a food that is a good source of protein.
Meat, fish, beans, eggs, nuts
What do we call the variable we keep the same?
Dependent variable
What does water remove from the fire triangle?
Heat
What gas is produced when the sulfur in fossil fuels is burned?
sulfur dioxide
In the test for sugars, what colours does the Benedict's solution turn?
green - yellow - orange - red
Why do we need protein in our diet?
For growth and repair
What do we call the variables we keep the same?
Control variables
What are the 3 things needed for a fire?
Fuel; oxygen; heat
What problem does the carbon dioxide given off by burning fuels cause?
Global warming
What substance is used to test for protein AND what colour does it go?
Biuret's solution - it turns purple
Why do we need fibre in our diet?
To pull the food through the intestines
OR
To help us poo
What does the unit "kJ" stand for?
kilo joule
When things burn, they combine with oxygen. What is this called?
Oxidation
What problems can global warming lead to?
Rising sea levels, climate change, spread of disease, flooding, crops not growing