1. Basic building block of all matter
2. Element
3. Smallest particle that makes up matter
100
What is a molecule?
Atoms combined together by a chemical bond.
100
True or False? During a chemical change, atoms are reaaranged.
True!!! This also shows the law of coservation of mass because the mass doesnt just disappear,in a chemical change it is just transformed into something new.
100
What are the 4 things that the periodic table tells you about each element?
Atomic Number
Chemical Symbol
Name of Element
Atomic Mass
100
Endothermic reactions ______________ energy so they usually feel cool, while Exothermic reactions _______________ energy so they usually give off heat.
1. Absorb/take in
2. Release/give off
200
What are the three inner parts of an atom and what are their charges?
Create a model of Carbon Dioxide
(Must include the following)
1. Name of element and Chemical Formula
2. Model of molecule
3. List of atoms and their atomic number
Carbon Dioxide - CO2
Carbon - 6
Hydrogen - 8
200
Fill in the blanks in order.
Burning a piece of paper would be a ____________ change, but a folding, tearing, or soaking a piece of paper would be a _____________ change
1Chemical
2Physical
200
How many protons does thorium have?
90
200
What is the definition of flammability? Is this a physical property or a chemical property?
The ability to burn. This is a chemical property.
300
What does the atomic number of an element represent?
The amount of protons in the atom
300
Create a model of Water
(Must include the following)
1. Name of element and Chemical Formula
2. Model of molecule
3. List of each atom and their atomic numbers
Water - H2O
Hydrogen - 1
Oxygen - 8
300
Name three keywords that let you know a chemical reaction/change is happening.
React/Reaction/Reactivity
Flammable/Flammability
New
300
What Period and Group does the element gold lie in?
Period 6 Group 11
300
What is the law of conservation of mass state?
Mass cannot be created or destroyed. It can only be transferred into a different form.
400
How many protons and electrons do the following elements have?
1. Carbon
2. Hydrogen
3. Oxygen
Carbon - 6
Hydrogen - 1
Oxygen - 8
400
Create a model of Methane
(Must include the following)
1. Name of element and Chemical Formula
2. Model of molecule
3. List of atoms and their atomic number
Methane - CH4
Carbon - 6
Hydrogen - 1
400
In this chemical equation what are the reactants and what are the products.
C + O2 --> CO2
Reactants: C + O2
Products: CO2
400
Name a solid non-metal element on the chart. (Hint: Use key on the periodic table)
What is the definition of boiling point? And is this a physical property or a chemical property?
The point at which a substance turns from a liquid to a gas. This is a physical property.
500
How many electrons can fit on the first three energy levels of an atom's electron cloud?
First level - 2
Second Level - 8
Third Level - 18
500
What is the differenece between a carbohydrate molecule and a hydrocarbon molecule?
Carbohydrates have only Carbon ( C ) , Hydrogen (H), and Oxygen (O). While Hydrocarbons have only Carbon (C) and Hydrogen (H).
500
The following diagram has blue dots representing molecules. A, B, C are all in different physical states. Label each physical state on the line with the corresponding letter. Words to be used are Gas, Solid, Liquid.
a. ________________________
b. ________________________
c. ________________________
A:Solid
B:Liquid
C: Gas
500
What is the atomic number, Chemical Symbol, and Atomic mass of Carbon, Oxygen, Hydrogen, and Nitrogen?
Carbon = 6 C 12
Oxygen = 8 O 16
Hydrogen = 1 H 1
Nitrogen = 7 N 14
500
What is density? What is the formula for density? Is this a physical property or a chemical property?
The amount of mass in a given volume. (mass / volume). Physical property.