Measurements
The standard unit of measurement for VOLUME.
Litre
Has a definite shape and volume.
Solid
What is Matter?
Anything that has mass and takes up space (volume).
What subatomic particle has a negative charge?
Electrons
What are the rows on the periodic table called?
Periods
Smaller amounts of liquid are measured in ___________.
Millimeters
Has no definite shape or volume.
Gas
To cause a liquid to change to a gas it requires __________.
Heat
What two subatomic particles are found in the nucleus?
Protons and neutrons
What 2 elements is water made up of?
Hydrogen and Oxygen
A tool used to compare an unknown mass with a known mass.
Balance
Has a definite volume but no definite shape.
Liquid
To cause a gas to become a liquid requires it to __________ down.
Cool
What is the formula for finding the neutrons of an atom?
Atomic mass - number of protons
What element is known as K?
Potassium
Has lines and numbers on its side and is used to measure volume.
Graduated Cylinder
The process of when a liquid changes to a gas.
Evaporation
What is physical change?
A change in matter that DOES NOT form a new substance.
What is an Element?
A substance composed of a single KIND of an atom.
An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?
125
What is used to transfer or measure known volumes of liquids
Pipette
The process when a gas changes to a liquid.
Condensation
What is chemical change?
A change in matter that DOES form a new substance.
What are the electrons on the outermost shell called?
Valence electrons
What do elements in the same group have in common?
Number of valence electrons
What is the curved upper surface of a liquid in a graduated cylinder called?
The meniscus
What is kinetic energy?
the energy of motion
What is the difference between vaporisation and evaporation?
In vaporisation all the liquid turns to a gas, in evaporation only the top layer of the liquid turns to a gas.
What is a compound?
A substance in which two or more different elements are chemically bonded.
How is the modern periodic table is organised?
Increasing atomic number