chapter 1
Q1: What is matter?
A physical substance
A substance with a definite shape and definite volume is a
SOlid
an atom with the same number of protons and a different number of neutrons from other atoms of the same element
The letter H is the _______ for hydrogen.
Symbol
What are the two different kinds of properties or matter?
Physical and Chemical Properties
Q2: What is a substance?
A particular kind of matter with uniform properties.
Why do liquids and gases take the shape of their containers while solids do not?
The particles of liquids and gases are lose and can move freely causing it to have no shape unless forced but solid particles are locked together causing it to already have a shape.
what element is Li
Lithium !
Platinum jewelry lasts a long time because the metal is very ___________ .
Dense and and relatively rare.
A change in matter that produces one or more new substances is called a...
Chemical Change
Q3: What's the easiest and natural that was created and made substance?
sea water
A puddle dries up by the process of
Evaporation
what are Non-metals
not conductive, network covalent solids formed, v low melting pts, form anions
What are valence electrons ______.
Is a outer shell that is associated with an atom.
Substances that undergo the chemical changes are called...
Reactants
Q4: What is the first point in physical property?
Color
Describe the particle motion and position of a solid?
The particles are closely locked in position and can only vibrate in place.
What are the elements at the bottom of the periodic table called?
The two rows of elements present at the bottom of the periodic table are called the 4f series or lanthanoids and 5f or actanoids. They are also called inner transition elements
why do the properties of elements change in a regular way across a period?
As you go across a period electrons are added to the same energy level.
How do atoms form bonds?
They form bonds when they share or transfer electrons
Q5: How many substances are in chemical property?
7
Which change of state can be classified exothermic?
Freezing
What number is used to arrange the periodic table?
The atomic number of an element is the same as the number of protons in that particular atom.In the periodic table the elements are arranged into periods and groups. A row of elements across the table is called a period. Each period has a number: from 1 to 8.
why are transition metal compounds often used in paint pigments
Typically, inorganic pigments are crystals of metal compounds.
How can you break a chemical bond?
When it reacts to Magnesium.