Chemical/Physical Changes
A colour change (new) indicates this type of change.
What is chemical?
The 3 sub-atomic particles that make up an atom.
What are protons, neutrons, and electrons?
Draw an atomic model for an atom of Helium.
2 protons and 2 neutrons in the nucleus. 2 electrons orbiting in the first shell.
The two types of elements that come together to form an ionic bond.
What are a metal and a non-metal?
The type of elements that come together to form a covalent bond.
What are two non-metals?
A state change (like melting) indicates this type of change.
What is physical?
The number of neutrons in an atom of Argon (Ar).
What is 22?
Draw an atom of Nitrogen (N).
7 protons and 7 neutrons in the nucleus. 2 electrons in the first orbital, 5 electrons in the second orbital.
The charge that the metal in the ionic bond forms, and the name for an ion of that charge.
What is positive?
What is a cation?
The chemical formula for dihydrogen monoxide, commonly called water.
What is H2O?
Mixing baking soda and vinegar is this type of change. Explain why.
What is chemical? Because a gas (new substance) is produced (fizzing).
The number of electrons that fit in the first shell/orbit/energy level of an atom.
What is 2?
Draw an atom of sodium (Na).
11 protons and 13 neutrons in the nucleus. 2 electrons in the first shell, 8 electrons in the second shell, 1 electron in the third shell.
The charge that the non-metal in the ionic bond forms, and the name for an ion of that charge.
What is negative?
What is anion?
The name for N2O.
What is dinitrogen monoxide?
A method to distinguish between carbon dioxide and oxygen gas.
What is a flame test? A flame (candle) will go out from CO2, but a glowing splint will re-ignite from oxygen.
The number of electrons that fit in subsequent shells of an atom after the first shell.
What is 8?
Draw an atom of fluorine (F).
9 protons and 10 neutrons in the nucleus. 2 electrons in the first shell. 7 electrons in the second shell.
What is PbO2?
The chemical formula for sulfur trioxide.
What is SO3?
This law explains that the mass of the reactants must equal the mass of the products.
What is the law of conservation of mass?
The number of protons, neutrons, and electrons in an atom of Beryllium (Be).
What is 4 protons, 5 neutrons, and 4 electrons.
Draw an atom of neon (Ne).
10 protons and 10 neutrons in the nucleus. 2 electrons in the first shell and 8 electrons in the second shell.
The name for Mg3P2.
What is magnesium phosphide?
The name for PH3.