Chemistry
What atoms is a water molecule made up of?
2 hydrogen atoms, 1 oxygen atom
What is the process in which plants get their food?
Photosynthesis
What is matter?
Matter is everything around us.
Ohhh no! You'll lose these points. well, unless you can guess the last thing I ate.
Fil mixed with applesauce, and whole grain cereal.
Positive ions have more protons than electrons, while negative ions have more electrons than protons.
When did the first single cell organisms appear?
2 billion years ago.
How do you calculate speed?
Distance/time.
What is ecology?
Ecology is the study of relationships between organisms and their environment.
What is the difference between a strong acid and a concentrated acid?
A strong acid is a solution that has many hydrogen ions, while a concentrated acid only has minimal water.
Give 3 evidence of evolution?
Fossil records, similar structures, vestigial structures, DNA evidence, similar embryos.
What is Ohm's law?
Ohm's law is the formula used to calculate the relationship between voltage, current and resistance (in an electrical current).
Congrats! You get these points for free! All you have to do is say what 1+1 is.
2
What is a covalent bond?
A covalent bond is when atoms share electrons instead of transferring them.
How do mosses and ferns get nutrients?
they absorb (carbon dioxide, oxygen, water) from the air, they don't have roots.
What is frequency?
The amount of sound waves per second.
What are two things you can do to help electrical safety?
Don't swim during a storm, turn off the light switch before changing a light bulb, don't have drinks close to a computer, don't put things into outlets (there are many more)
List 4 properties of halogens
What was the first type of animal to live on land fully?
Reptiles
What two things does friction depend on?
the types of surfaces, how hard the surfaces are pushed together.
Explain chromatography.
Chromatography is when you get a substance to travel through a stationary object. Because different substances move faster than others, they are separated.