1-5
What is chemistry?
The study of matter, including atoms, elements, compounds, and mixtures, and the changes that it undergoes.
What is the primary kind of energy released in a migrating butterfly?
mechanical
Give an example of a physical or chemical change not given in the textbook
answers vary
What do we call the tendency of matter to spread out?
diffusion
What kind of chemical compound is L-arabinose? (see #16 for more information)
an inhibitor
What makes up each of the following substances?
1. Elements
2. Covalent compounds
3. Ionic compounds
a. atoms
b. molecules
c. formula units or crystals
What is the primary kind of energy released in a chirping cricket?
acoustic
What is one of the basic laws about the amount of matter and energy in the universe?
They cannot be created or destroyed.
Solvent: Water
Solute: Salt
How does scientists working to develop L-arabinose fulfill God's commands?
They fulfill the command to love each other.
What do we call the tendency of energy to spread out?
Entropy
What is the primary kind of energy released in an anglerfish glowing?
light
How are ionic and covalent compounds the same? How are they different?
Both are types of bonds
One is a sharing of VE, the other is VE given away from a weaker element to a stronger one.
Look at the chemical equation Mrs. Reichle writes on the board.
Which are the reactants and products?
...
What property of water makes it really good at dissolving?
It uses both adhesion and cohesion to break apart molecular bonds.
What are the five types of energy mentioned in the text? Name three
Mechanical
Acoustic
Light
Chemical
Thermal
What is the primary kind of energy released in an emperor penguin spitting up crop milk to feed its baby?
chemical
Your stomach contains hydrochloric acid. As an acid, what properties does it have?
it can form hydrogen ions in water and it can accept a hydrogen ion.
enzyme/catalyst
Why are organic compounds so named?
They are associated with life.
How are matter, energy and life related?
All life is made of matter, and all life needs energy.
What is the primary kind of energy released in a mother kangaroo warming her baby in her pouch?
thermal
What is the difference between solutions and other mixtures?
solutions are uniform
What does a catalyst/enzyme do?
Lowers activation energy needed for a chem. reaction.
Four
single, double, triple