When you consume an organism, you only receive 10% of the energy, but how much of the toxins do you receive?
All of the toxins (｡•́︿•̀｡)
An example of Solvent
Water
The pattern of magnetic field produced is not affected by the direction of the current that flows in the conductor.- True or False
True
In a food chain which organism would be having the most bioaccumulation?
Apex predator
Increasing the batteries increases the strength of an electromagnet-True or False
True
what is bioaccumulation
buildup of toxins in an organism
Test for iodine is done for
Presence of starch
If you are wearing a black sweatshirt, what happens to most of the light that strikes the sweatshirt
is it absorbed
You consume 2 servings of ice cream, how many calories are you consuming? *150 calories per serving
300
Eating liver is a great source of____________ which helps the body produce red blood cells to carry Oxygen
Iron
In an exothermic reaction, heat is ...
given out or released
Baking bread and cooking an egg are examples of....?- Exothermic or endothermic process
Endothermic processes
How does a solution become supersaturated?
dissolve more solute than you should be able to
Solutions are composed of
Solutes and solvents
A type of magnet that has temporary magnetic effect when electric current flows through it.
electromagnet
why do we see objects as white?
They reflect all light
what are the materials that make up a permanent magnet
Nickel, Cobalt, Iron
Smooth surfaces _______ a lot of light.
reflect
ways to increase the strength of an electromagnet
increasing the number of coils around the nail, increasing the number of batteries, making the core bigger.
What is the colour change when we test a food using Benedict solution?
Orange
A compass needle responds to a magnetic field, because the compass needle is a
magnet
Which is not essential in a balanced diet normally?
Any junk food
A balanced diet is when the food eaten provide the ____(a)_____ amount of ____(b)______ needed by our body for healthy ______(c)_______ and developement.
(a) Correct (b) nutrients (c) growth
AN example of solute
Any solid that dissolves- Salt, sugar
Is photosynthesis an exothermic or endothermic reaction?
endothermic
why does the compass needle move at different locations?
Because the needle is attracted to the magnetic field produced by the magnet
In an endothermic reaction, heat is
taken in or absorbed
When light passess through this object, it is refracted off of one wall and reflected to another, the light is refracted again and as it leaves the object, it forms a rainbow. What is this object?
prism
Another name for light bending is ....
refraction
Short-term effects of smoking.
increased heart rate, hand tremors , bad breath
Biuret test is done for
Protein
Examples of toxins that are involved in bioaccumulation
pesticides, mercury, insecticides
One component that our digestive system cannot digest
Fibre
Smoking interferes with the lungs' ability to provide what to the rest of the body?
Oxygen
The concentration of a mixture can be increased by____
Adding more powder" solute"
The area around a magnet is called the
magnetic field
How could you change a saturated solution to an unsaturated solution?
Add solvent
Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?
it is an endothermic
Name of the chemical in tobacco that causes addiction
nicotine
Vaping and Hookah is much safer than cigarettes because they don't have any harmful chemicals like nicotine in it and they smell good.-True or False
False
The pattern of magnetic field depends on the shape of conductor.
True
When a ray of light moves from the air to water it bends due to a change in
speed
Nicotine puts the most stress on which organ?
Heart
Which nutrient provides the most amount of energy per gram?- carbohydrate/ fats/ protein/vitamin
Fat
The _____ is the thing being dissolved.
Solute
After you mix two substances together, a new substance forms. This is an example of: Physical or chemical change
Chemical change
What is the relationship between nicotine and adrenaline?
nicotine triggers the release of adrenaline
If you are wearing a yellow shirt, what is true of the light that strikes it?
yellow colour is reflected, everything else is absorbed.
What type of reaction occurs in a hand warmer
exothermic
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