Chemistry: First Semester Final

1. The scientific method is...

• gathering information through observation and using it to form theories.
• the rules science follows to gain information and understanding.
• what is used in high school labs.
• important but seldom actually used in modern science.

2. Chemistry is...

• the study of matter, its composition, properties, and reactions.
• the study of matter and energy and how they interact.
• the study of Earth's composition, history, and structure.
• the study of forces and the changes they produce.

3. The SI system is based on the _?_ system.

• French
• English
• SAE
• metric

4. Matter is...

• the amount of mass a body has.
• the ratio of mass to volume.
• anything with mass and volume.
• anything capable of producing change, heat, or doing work.

5. In a chemical change...

• the appearance changes but the identity of the material remains the same.
• new substances are created.
• the mass after the change is greater than the mass before the change.
• heat is given off.

6. An electron is...

• a subatomic particle with a mass of 1 amu and a positive charge.
• a subatomic particle with a mass of 1 amu and no charge.
• a subatomic particle with almost no mass and a negative charge.
• none of these.

7. Carbon-12 & carbon-14 are two different _?_ of carbon.

• ions
• states
• isotopes
• carbides

8. 1s^2 2s^2 2p^3 is the neutral electron configuration of...

• neon
• phosphorus
• nitrogen
• not enough information is given.

9. "When the elements are arranged by atomic number they show a period trend in their properties."

• Law of Conservation of Energy
• Law of Definite Proportions
• Dalton's Atomic Theory
• Periodic Law

10. The s-block elements are...

• also called the transition metals.
• the two rows at the bottom of the periodic table.
• columns 1 & 2.
• another name for the halogens.