Chemistry
What is matter?
Anything that has a mass and takes up space.
What are the two variables in science?
The independent and the dependent Variables
What's the base unit for length/ height?
A meter
What is the formula to find desnity?
D=m/v
What makes an hypothesis more than a hypothesis?
A hypothesis is something that you can test.
MUST BE TESTABLE
What is an atom and what are they made out of?
An atom is a basic building of matter. Atoms are made out of 3 parts. This includes protons, neutrons, and electrons.
True Or False
Does the dependent variables goes on the X-Axis?
False
it goes on the Y-Axis
how many Units are there
7 units
True or False:
The density of water is 1g/ml.
True
what is the fist element
Hydrogen
How much does the first electron shell in an atom hold?
It holds two electrons.
What is data?
Data is measurements that are collected during an experiment that tells a story.
What are three possible base units?
Liters, meters, and grams.
whats the formula for finding mass?
Mass is density time volume
Name two thing in the scientific methods
collect data
What fly out of the atoms?
Elections
What is the chemical formula of water
H2O
Name the units from greatest to least
kilo, hecto, deka, B.U, deci, centi, milli
true or false
the formula for volume is D M/v
volume is mass divided by density
True or False:
The atomic number equals the number of protons in an atom.
True
True or False
The nucleus of an atom contains the following:
proton and Electron
False
Proton and neutron
How do you read the volume for a graduated cylinder?
You call it meniscus.
Before a deca comes a hecto and then base unit.
What is an isotpoe?
A isotope is 2 or more types of an atom of a chemical element. It has the a different number of neutrons but the same number of protons. Different atomic masses.
True or false:
Does the 2nd shell have room for 10 or more electrons.
False
It has room for 8 electrons.