Show:
Atomic Structure
Molecular Structure
Acids & Bases
Solutions & Mixtures
Matter
100
Which particles determine the element?
Protons
100
How many molecules are there of Carbon Monoxide 3CO?
Three
100
What is the value range of basic substances?
Above 7 and below 14
100
An interaction in which the molecules of one substance have dissolved into another.
What is a solution?
100
Explain what matter is
Anything that has mass and takes up space
200
What is an anion? What is a cation?
A negatively charged atom; A positively charged atom
200
What is the chemical formula of a compound that has three Nitrogen and four Oxygen
N3O4
200
What is the value range of acidic substances?
Above 0 and below 7
200
A combination of two or more substances that have not chemically combined and can be separated.
What is a mixture?
200
Explain the movement of particles in a liquid
Liquids move fast and can overcome the attraction, they can flow around and over each other.
300
The removal and addition of what particle effects the charge of an atom?
What are electrons
300
The compound methane is composed of one Carbon atom and 4 Hydrogen atoms, draw the structural formula
300
When acids react with water, what will be produced?
Hydrogen ions
300
Explain what a solvent is and give an example
Sample answer: something that dissolves something else, water/juice
300
Explain the movement of particles in a gas.
Fastest moving particles, can overcome the attraction between them and separate entirely.
400
Is sulfur a "Happy Atom"? How many electrons is he looking for?
No; 2 electrons
400
What are the two main types of bonds? How do they differ? Which one is the strongest type of bond?
Covalent: share electrons Ionic: transferring electrons Covalent is the strongest type of bond
400
When bases react with water, what will be produced?
Hydroxide ions
400
Explain what a solute is and give an example
Sample answer: something that dissolves into another substance; sugar/salt
400
Distinguish the difference between melting and dissolving
Melting happens to a single substance and is caused by heat, where the result is a change in the state of matter Dissolving occurs between two substances, and the particles interact with one another and become uniformly mixed
500
Lead Pb has an AMU of 207.20, how many neutrons does it have?
125.20 neutrons
500
The compound Phosphorus trihydride, has one Phosphorus atom and 3 hydrogen atoms, look at the periodic table to determine how many electrons each element has. Since hydrogen does not have any extra electrons to donate, what does phosphorus have to do with the hydrogen electrons in order to be happy?
Share electrons
500
Tommy walks into the science lab and discovers an unknown substance. He wants to determine whether it is acidic or basic. He notices that it has a harsh smell, it has started to corrode the container that it is in. He decides to pour some out to see what happens, as he pours a little into the sink, he notices it is actually cleaning it. What it is?
Base
500
What is the difference between a heterogeneous and homogeneous mixture? Give an example of each
A heterogenous mixture is different and non-uniform throughout: lucky charms. A homogenous mixture is the same and uniform throughout: milk
500
Compare and contrast the process of melting and vaporization
Comparison: Both processes occur due to heat, which cause the particles to move faster. Contrast: Gaseous (vapor) particles move faster than liquid particles Melting changes substances from a solid to a liquid, due to heat particles begin to move fast enough that they can overcome the attraction that locks them together. Vaporization changes substances from a liquid to a gas, also due to heat, the particles are moving so fast that they completely break free from one another.