Show:
Unit 1 - Introduction
Unit 2 - Properties of Matter
Unit 3 - Atom and Periodic Table
Unit 4 - Chemical Bonding
Unit 5 - Chemical Reactions
100
This is the base unit used to measure length in the metric system.
What is the meter?
100
Red color is an example of this type of property.
What is physical property?
100
This subatomic particle has a positive charge.
What is the proton?
100
Atoms can lose or gain electrons and become _______.
What is ions?
100
The substances that are present before the reaction occurs are called this.
What are reactants?
200
This prefix means 1/100.
What is centi?
200
Flammability is an example of this type of property.
What is a chemical property?
200
These are atoms of the same element with different numbers of neutrons.
What are isotopes?
200
This type of bonding involves the sharing of electrons.
What is covalent bonding?
200
In this type of chemical reaction, multiple substances come together to form one new substance.
What is a synthesis reaction?
300
In the laboratory, a balance is used to measure this.
What is mass?
300
Melting ice is an example of this type of change.
What is a physical change?
300
On the periodic table, the columns are called this.
What are groups or families?
300
Draw an electron dot diagram for NF3.
See board.
300
Determine the reaction type for the reaction shown below: _1_Al2O3 + _6_LiCl --> _3_Li2O + _2_AlCl3
What is double displacement (or double replacement)?
400
0.62 kilometers is equal to this many meters.
What is 620 meters?
400
Mixing baking soda and vinegar is a chemical change. Name one piece of evidence that supports this statement.
Gas is released (in the form of bubbles).
400
This is the sum of the protons and neutrons in an atom.
What is mass number?
400
Is MgS an ionic or covalent compound?
What is ionic?
400
Name four signs that a chemical reaction has occurred.
Precipitate formed, gas released, unexpected color change, change in heat, change in light.
500
Find the density of an object with a mass of 27 grams and a volume of 9 cubic centimeters. Your answer must include units. {Density = mass / volume}
What is 3 grams per cubic centimeter?
500
What is the difference between a physical change and a chemical change?
Chemical changes involve a change in identity, while physical changes only involve a change in appearance.
500
Name the isotope with 3 protons and 4 neutrons.
What is Lithium-7?
500
Ionic compounds conduct electricity only when they are _______.
What is dissolved in water?
500
Balance this chemical equation: C6H12O6 + O2 --> CO2 + H2O
_1_ C6H12O6 + _6_O2 --> _6_CO2 + _6_H2O