Basic Chemistry
The most basic building block of matter
atoms
Which of the following is NOT an element?
1. Oxygen
2. Helium
3. Aluminum
4. Water
water
This is the substance which contributes H+ ions
acids
These are the substances that are present before a chemical change occurs
reactants
This is the type of reaction that occurs when an acid and base are mixed together
neutralization
This is the particle in the atom which has a neutral charge
neutron
A compound has two or more different what
elements
indicator
This is the type of reaction in which energy is absorbed from the surroundings
endothermic
how does temperature affect the rate of reaction?
the greater the temperature, the faster the reaction rate.
The most common type of element on the Periodic Table of Elements
metals
what is the center of the atom called?
nucleus
Name a substance which is produced in a neutralization reaction
water OR salt
When iron rust, iron (Fe) combines with oxygen (O2) to form Fe2O3. What type of reaction is this?
Synthesis reaction
If fluorine contains 10 neutrons, 9 protons and 10 electrons, what charge does it have?
-1
What type of matter is H2 (hydrogen gas)
element
What was one conclusion Rutherford's experiment made about the atom?
2. the nucleus contains most of the mass
3. the nucleus is extremely dense
Ions in a liquid which conducts electricity is called
electrolytes
This is the particle which creates a chemical bond when it is shared between atoms
electrons
This is the smallest particle of a compound that still has all the qualities of that compound
molecule
This was the first person to come up with the idea of the atom
Democritus
Why is sulfuric acid (H2SO4) considered a compound where S8 (sulfur) is not?
Sulfuric acid is made of two or more elements where sulfur is not.
A substance has a pH of 7. How does the pH change if OH- ions are added?
What do all elements in the same column of the Periodic Table have in common?
Chemical properties
What was the name of the experiment that Rutherford performed on the atom?
The Gold Foil Experiment