Matter and Atoms
Whats matter?
Anything that takes up space and has mass.
What's a chemical property?
Ability of a substance to combine with another into a new substance.
Whats a physical property?
Characteristics that can be observed with out changing the objects composition.
Tell me the four states of matter.
Liquid, gas, solid and plasma
Tell me two characteristics of a Proton.
Part of the Nucleus.
Positive charge.
What is a substance?
A substance is a type of matter that can't vary in composition.
Whats flamability?
Ability of a material to burn easily/
Tell me the definition of a physical change and an example.
A change that dosnt alter the identity of a substance.
Exp
Cutting paper.
Tell me three things about a solid.
Particles close together.
Strong force between them.
Vibrate in all directions.
How do you calculate the amount of protons on an atom?
By the atomic number.
Give me three characteristics of an element.
1. Has only one type of atom.
2. Has a chemical symbol.
3. Is organized in the periodic table.
What's a chemical change?
A change that alters the identity of a substance or creates a new one with new properties.
Find the size dependent.
Magnetism , Conductivity , State of matter , Density , Mass , Melting and Boiling points Volume ans Solubility
Mass and Volume
Tell me three characteristics of a liquid
Takes the shape of its container.
Particles kind of close together.
Particles free to move
How do you calculate the electrons?
It is normally the same as the proton.
Tell me two characteristics of a compound?
1. Has 2 or more atoms.
2. Has a chemical formula.
Its rusting a chemical change?
Yes, Cause it creates a new material cause of the reaction between the oxygen and the metal.
What's density and how do you calculate it?
Its the mass per unit of volume. The equation is
Density=Mass/Volume
Tell me three characteritics of a Gas.
Particles very apart.
Particles move freely.
Very weak attractive force.
How do you calculate the neutron in an atom?
Neutrons=Atomic Mass Number−Atomic Number
Heterogenous
1. Unevenly mixed.
2. Can be physically separated.
3. Visibly mixed.
Homogeneous
1. Evenly mixed.
2. Cannot be seen.
3. Can only be separated by chemical methods.
Tell me 5 signs of chemical change.
1. Change of color.
2. Smoke.
3. Fizz.
4. Bubbles
5. Energy change.
6. Explosions
7. Precipitation
Tell me three physical properties and theire definition.
The amount of matter an object has.
Weight depends.
Volume size dependent
You can measure the volume of a liquid with a measuring cup.
You can measure the volume of a solid with a special formula.
Conductivity
Ability of a substance to transfer either heat or electric currents.
State of matter
Whether something is a liquid solid or gas.
Magnetism
Attractive force some metals especially iron.
Density
It is the mass per unit volume of a substance.
Does not matter the volume of the object.
It's helpful when identifying a new substance.
Solubility
Is the ability to dissolve a component in another.
Melting Point
The temperature in which a solid turn into a liquid.
Boiling Point
The temperature in which a liquid turns into a gas.
What's conservation of mass?
During physical change properties of matter change. The particles in matter that are present before a physical change are the same as those present after the physical change. Because the particles are the same both before and after a physical change the mass before and after the change is the same.
What's the chemical symbol for arsenic??
Extra credit
As