Vocabulary
Coefficient
What is a number placed in front of a chemical formula to show how many molecules or units of that substance are involved?
A reaction where multiple simpler substances are broken down and form larger, more complex molecules
What is a synthesis reaction?
Examples of chemical changes
What is wood burning, iron rusting, baking a cake, milk souring, food rotting, gasoline burning, fireworks exploding, photosynthesis...?
Sharing electrons
What is covalent bond?
2H2 + O2 → 2H2O
What is a chemical equation?
Products
What is the new substances formed during a chemical reaction, written on the right side of a chemical equation?
A reaction where two or more atoms in different substances are switched to form new products
What is a replacement reaction?
Examples of physical changes
What is ice melting, water freezing, water boiling, water evaporating, cutting paper, breaking glass, crushing a can, sharpening a pencil, dissolving salt in water, stretching a rubber band, chopping wood...?
Giving away an electron
What is ionic bond?
Law of Conservation of Matter vs Law of Conservation of Mass
What is mass is conserved since the number and type of atoms don't change?
Reactant
What is a starting substance in a chemical reaction, written on the left side of a chemical equation?
A reaction where a larger, more complex molecule is broken down into smaller molecules
What is a decomposition reaction?
Three signs you can tell if a chemical change has occured
What is change in color, temperature, and/or odor, produces bubbles, a light, and/or a solid?
Ionic bond example (draw)
What is...
A solid formed during a chemical reaction
What is precipitate?
Law of Conservation of Matter
What is matter cannot be created or destroyed. The total mass of the reactants equals the total mass of the products?
Endothermic reaction
What is more energy needed to break the bonds than is released when a new bond is formed, absorbs more energy than it releases, often making the surroundings cooler?
All chemical properties
What is flammability, toxicity, and reactivity?
Covalent bond example (draw)
What is...
Biblical vs Naturalistic worldview
What is a way of understanding the world based on the Bible as God’s Word and perfect Truth, including the belief that God created and sustains the universe vs. a way of understanding the world that explains nature through natural processes without relying on supernatural causes or The Big Bang theory?
Is both a physical and a chemical change that occurs within organisms and help make life sustainable
What is digestion?
Exothermic reaction
What is more energy released as the new bonds are formed than was needed to break the original bonds, releases energy into its surroundings and temperature increases, often as thermal energy/heat or light?
All physical properties (8)
What is color, magnetism, transparency, density, reflectivity, conductivity, flexibility, boiling and melting point?
Role of a chemical bond in a chemical reaction
What is energy is stored in chemical bonds, in a reaction the bonds are broken and re-formed, releasing energy?
A substance that is transparent, conducts thermal energy well, is not magnetic, and is not flammable
What is glass?