A ___________ is a blend of two or more kinds of matter, each of which has its own identity and properties.
Mixture.
100
The smallest particle of a given type of matter is _____.
Atom.
100
A chemical bond in which two atoms SHARE electrons is a ________ bond.
Covalent.
100
100cm = _________ mm
1000mm
200
A ____________ is a possible explanation for a problem using what you know and observe.
Hypothesis.
200
A ___________ only contains one type of molecule. It cannot be broken down physically into anything else.
Pure substance. (element/compound)
200
The _______ electrons are found in the outermost energy level. These are used in chemical bonding.
Valence.
200
An ionic bond happens between a nonmetal and a _______.
Metal.
200
Convert into scientific notation:
2,340,000.0
2.34x10^6
300
A set of variables that you intentionally keep the same throughout all of the trials is called the __________.
Constant.
300
What is the formula for density?
Density = Mass / Volume
300
The ________ _________ is a systematic approach used in scientific study; an organized process used by scientists to do research and to verify the work of others.
Scientific Method.
300
The ability for atoms to attract electrons is called _________.
Electronegativity.
300
Convert into standard form:
6.0x10^-4
0.0006
400
Boyle's Law discusses temperature and volume. Using this, if you left a basketball outside in the winter, would its volume increase or decrease?
Decrease.
400
_______ changes occur when one or more substances are permanently changed into a different substance.
Chemical.
400
This subatomic particle has a positive charge, is found in the nucleus, and has mass.
Proton.
400
If atoms in a covalent bond share UNequally the bond is considered to be _________.
Polar.
400
Read the set of data and decide whether this is precision or accuracy:
The boiling point of water should be 100C. You measured 87.8C, 88.0C, 90.0C, and 86.8.
Precision.
500
Which type of solid does not have a patterned structure and would lose its shape over time?
Amorphous.
500
List 3 of the 5 indicators of a chemical change.
Burning
Gives off Gas (bubbles)
Color Change
Temperature Change
Forms a Solid (precipitate)
500
Silver has how many neutrons?
61.
500
Which family on the Periodic Table satisfies the octet rule, and therefore do not bond?
Noble Gases
500
If 1in = 2.54cm, how many cm are found in 10 feet?