2 H2 + O2 = 2 H2O molecules. What is the product of this chemical reaction?
Water molecules
100
What type of change? Burning a piece of paper
Chemical Change
100
Which element has 6 protons?
Carbon
200
What tells the number of electron shells an element has?
The period or row
200
What is the negatively charged subatomic particle found in the atom?
The electron?
200
The number of elements in the reactants = The number of elements in the products, represents what idea about matter?
Law of conservation of matter
200
What type of change? Ripping a piece of paper
Physical change
200
Which element has 3 electron shells, 3 outer electrons
Aluminum
300
Where are the non-reactive elements found?
The far right column, Group 18, Noble Gases
300
What is the positively charge particle found in the nucleus?
Proton.
300
Is vinegar an acid or a base?
Acid
300
What type of change? Produces an energy release or a gas
Chemical Change
300
What do you call a charged particle when an electron is gained or lost
Ion
400
The atomic number of an element tell you what information about the element?
The number of protons.
400
How do you use the information in the periodic table to find the number of neutrons?
Atomic Mass - Atomic Number = Neutrons
400
What determines how reactive an element is? (Think about the particles in an atom's structure)
The outside or valence electrons.
400
What type of change? boiling water
Physical change
400
How many protons, neutrons, and electrons does Hydrogen have?
P = 1, N = 0, e = 1
500
The periodic table is organized by what characteristic of elements?
The number of protons.
500
An atom's overall charge is neutrons because there is an equal number of...
Protons and electrons
500
What are the two most reactive families?
halogens and alkali metals
500
What type of change? Produces an odor, a gas or a change in temperature
Chemical change
500
This is the chemical equation for photosynthesis.
6 CO2 + 6 H2O => C6H12O6 6O2
carbon dioxide + water => glucose oxygen
Name the reactants and the products.
Reactants 6 CO2 + 6 H2O
carbon dioxide + water
Products C6H12O6 6O2
glucose oxygen