Types of Matter
Basic building blocks of life
Atoms
A reaction that gives off heat is
Exothermic
How many dimensions are crystals
3-Dimensions
two or more atoms or elements bonded together
molecule
Carbon Dioxide filling the balloon is an example of what evidence of a chemical reaction?
Formation of a gas
Crystals have two halves that are identical to each other, this is known as...
Symmetrical
H is the symbol for
Hydrogen
What is a compound
two or more different atoms/elements bonded together
Baking Soda & Vinegar Mix to produce what?
Water, Carbon Dioxide, Sodium Acetate
What element are diamonds made from?
Carbon
These particles are negatively charged and are found outside the nucleus in shells.
Electrons
Na
Two or more elements not joined
Mixture
What is a chemical reaction?
Chemical interact to form new chemicals
What is the most common natural crystal?
Quartz
These particles have a positive charge and are found inside the nucleus.
Protons
How many protons does Magnesium have?
12 - same as the atomic number
substances that are made up of only one kind of particle and have a fixed or constant structure
Pure Substance
What are 5 signs of chemical changes?
Change of Temperature
Change of Colour
Formation of Gas
Formation of Solid (Precipitate)
Odor Change
Energy Change (Light or Heat)
How are atoms arranged in crystals?
in highly ordered, repeating patterns.
Most of the mass of an atom is located here
In the Nucleus
14