Chem Reactions 1
What is an atomic scale model and why is it important?
It allows us to see the structure and make-up of atoms that make up a molecule.
What is the law of conservation of matter?
Mass is neither created nor destroyed in chemical reactions.
Reactant
A starting substance that is part of a chemical reaction
What is inertia?
An object in motion stays in motion, and an object at rest stays at rest, unless an outside force acts upon it.
Monterey Bay is located in what body of water?
Pacific Ocean
What happens to the reactants in a chemical reaction that causes it to form a new substance?
Chemical bonds break apart and atoms rearrange and form new bonds.
How is energy released in a burning reaction?
Energy is release in the forms of heat and light.
Product
An ending substance that is made during a chemical reaction
What is the difference between temperature and thermal energy?
Temp is the average kinetic energy of something, but thermal energy is the total kinetic energy. Something can have greater temperature, but less thermal energy.
What are baby owls called?
Owlets or nestlings
What is an extended structure?
It is a structure formed by repeating groups of atoms that link together in a large network.
What is mass?
Property
Something that can be observed about a substance, such as color, smell, or boiling point
At dinner, Oscar passed the pepper shaker to his brother by sliding it across the wooden table. Why did the pepper shaker gradually slow down and come to a stop?
The table exerted a force that is opposite to the salt shaker's motion- friction
What year did the iPhone debut on the market?
2007
Why is it important to observe a substance's atomic scale models and not its physical properties?
Substances of different atomic structure can have the same physical properties, even if they are completely different.
What is the difference between chemical and physical reactions?
- Physical reactions changes the appearance of the substance but not the atomic structure.
- Chemical reaction changes the substance into something new by rearranging its atoms.
Chemical Reaction
A process in which atoms rearrange to form new substances
What are the 2 functions of the skeletal system and what role does it play when it works with the nervous system? Provide specific examples.
To provide structure for the body and protect vital organs. It protects the brain & spinal cord.
How many dots are there on a pair of dice?
42
How can you tell if properties of the two substances will likely be the same or different?
By looking at the atomic structure that make up each sample, and determining if they are the same or different.
What were the reactants and products in the Westfield water dilemma.
Reactants- iron pipes & fertilizer
Products- rust & sodium nitrite
Molecule
A group of atoms joined together in a particular way
What is the name of the gap between 2 different neurons that electrical impulses pass through?
Synapse / Synaptic Gap
Which substance can you not eat, if you have celiac disease?
Gluten