STATES OF MATTER
What is the three states of matter?
solids,liquids, and gases
What is a physical change?
A physical change alters the form of the substance, but does not change it into another substance.
On which side are metals and non metals
Metals on the left
Non metals on the right
What is chemistry ?
Chemistry is the study of the properties of matter and how matter changes.
Give one example of a metal
Calcium, Lead, Magnesium, Sodium etc
What is the arrangement of molecules in a solid ?
they are tightly packed
What is a chemical change?
A chemical change alters the substance , and its properties.
What is arrangement of the periodic table ?
Rows- across
Groups- down
What is an element?
an element is made up of one type of atom, it cannot be broken down into any other substance by any chemical or physical means.
Give one example of a metal and a non metal
Metals- Na, Mg
Non metals-C, O, F
What is the molecular arrangement in a liquid and gas?
The molecules are closer than a solid and take the shape of the container in a liquid. In a gas molecules are spaced apart and free floating.
List three properties of a physical change
Size, colour, state, density, melting and boiling points
What is the atomic symbol for Silicon?
Si
What is a compound?
A compound is a substance made of two or more elements joined together by chemical bonds.
Give one example of a metalloid
B, Si
What is the name of the process of a liquid turning to a gas?
Evaporation
List three properties of a chemical change
colour change, new substance appearing, bubbling and gas, temperature changes, sound and light, percipitate
What information can the atomic number tell you about each element?
The atomic number tells you the number of protons (or electrons)found in the nucleus of that atom.
What is a mixture ?
A mixture is a combination of substances that can be physically separated.
Give two properties of metals
shiny(have lustre), ductile, malleable., high melting point, dense, conductors of electricity and heat
What is the name of the process of a solid turning to a gas?
Sublimation
What is celsius boiling point of water?
The celsius boiling point of water is 100oC .
Which row and group is magnesium found in? How many electrons does the Mg atom have?
Row 3 and group 2
Mg has 12 electrons
Write the chemical formula for Magnesium oxide
MgO
Give three properties of non metals
dull, brittle, low density, poor conductors of electricity and heat