Chemistry - Nate Flashcards
The Periodic Table helps organise elements based on their ________ properties and ________ numbers.
chemical, atomic
Groups are ________ on the periodic table, while periods are ________.
columns, rows
For any element, the atomic number represents the number of ________, while the mass number includes both ________ and ________.
protons, protons, neutrons
Elements are arranged in the periodic table based on increasing ________ and similar ________ properties.
atomic number, chemical
The boundary between metals and non-metals on the periodic table is marked by a ________.
zigzag line
A compound is formed when two or more ________ chemically combine.
elements
Match each substance to its formula: a) Water - ________, b) Carbon dioxide - ________, c) Glucose - ________, d) Oxygen gas - ________
a) H₂O
b) CO₂
c) C₆H₁₂O₆
d) O₂
For each formula, list the atoms and their quantities: a) H₂O: ________, b) CO₂: ________
a) 2 Hydrogen, 1 Oxygen
b) 1 Carbon, 2 Oxygen
A ________ change forms new substances, while a ________ change does not alter the substance’s composition.
chemical, physical
Chemical changes can be observed through ________, production of ________, or formation of ________.
colour change, gas, precipitate
In a chemical reaction, the starting substances are called ________, and the substances formed are ________.
reactants, products
Write the word equation for methane reacting with oxygen to form carbon dioxide and water.
Methane + Oxygen → Carbon Dioxide + Water
Combustion requires ________, ________, and ________.
fuel, oxygen, heat
Corrosion occurs when metals react with ________, and rusting is a form of corrosion involving ________ and ________.
oxygen, water, iron
The Law of Conservation of Energy states that energy cannot be ________ or ________, only ________.
created, destroyed, transformed
Identify the type of energy: a) Energy from moving objects - ________, b) Stored energy due to position - ________
kinetic, potential
