Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
100

The melting point of table salt 801C. Is this a chemical or physical property?

Physical property
100
How does rain dry up?
It dries up by evaporation.
100
The atomic number of an element is determined by a number of ?
Protons 
100
When an atom loses an electron it become an...
ion
100
What happens when the temperature increases in a reaction?
Rate of reaction increases
200

Table sugar has the chemical formula C12 H22 O11. What is the ratio of carbon atoms to oxygen atoms in this compound?

12:11 
200
When you spray a febreze can how does it lose mass and volume?
It starts to disappear into the air and that happens by sublimation.
200
The rows in the periodic table is called?
Periods 
200
How many sodium ions are needed to balance the charge of one phosphate ion?
3
200
Would it be a physical or chemical property for iron to react with oxygen? 
Chemical Reaction 
300
What is the difference between heterogeneous mixtures and homogeneous mixtures?
Heterogeneous mixtures can be separated into individual items while homogeneous mixtures cannot be separated.
300
What change of state is exothermic?
Freezing
300
Dmitri Mendeleev constructed the first periodic table, which is.....?
A table that has all the elements going in order of atomic numbers. 
300
If elements have the same number of valence electrons, they are...
in the same group on the periodic table
300
Which of the following is the best evidence for a chemical reaction? 

C. Formation of a new substance

400
What is the density of a liquid with a mass of 17.4 g and a volume of 20 mL?
0.87 g/cm^3
400
What solid is rubber considered?
it is considered an amorphous solid
400
Of the following, the group that contains elements that are the most reactive is the......
Alkali metals 
400
When an atom gains an electron, it becomes a...
Negative ion
500
A chemical reaction is another name for...?
A chemical Change
500
When mirrors are foggy in the bathroom what state in?
You are seeing it in the liquid state.
500
Why is the cardon of the mass of a carbon atom greater than the total mass of its protons and electrons?
B
500
A carbon atom can form four covalent bonds. How many valence electrons does a carbon atom have?
Four valence electrons
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