According to our Fizz Quiz experiment, how did we know a chemical reaction took place?
Fizzing created gas and percipate
100
What is the solid that is dissolved in the liquid called?
Solute or solvent?
solute
100
How can you separate a sugar and water solution?
Think back to our experiment?
Evaporation
100
how many elements naturally occur on earth?
90
100
How many atoms are in 0-C-0?
3
200
What must happen for a chemical reaction to occur?
A new substance must be formed.
200
According to our las on mixtures and solutions, which of the following is a mixture:
Gravel and Water
Diotamaceous Earth and Water
Salt and Water
ALL
200
What can help speed up the process of evaporation?
Hot plate
200
What are the two most common elemnts in the human body?
Carbon and hydrogen
200
How many elements are in O-C-O?
There are 2 elemnts, Carbon and Oxygen?
300
What is the model for Carbon Dioxide?
O-C-O
300
Name three ways you can separate a mixture.
Screen, filter and evaporation
300
What makes a solution?
Solute must dissolve and be clear.
300
What is the most common in human body?
Carbon
300
What elements make up H2O?
2 Hydrogens and 1 oxygen.
400
What is the smallest particle of any matter called?
Atom
400
How do you know when a solution is formed?
Solid is dissolved and liquid is clear or transparent
400
Explain how to make a saturated solution?
Think experiment....
Take 50 ml of water.
Add salt and stir until it no longer dissolves.
400
How is the periodic table organized?
Metals and non metals
(metallic properties)
400
How many atoms make up H2O?
3
500
Are gravel and water a solution?
Are sand and water a solution?
No, because they do not dissolve.
500
What was common with epsom salt and regular salt in Investigation 2?
Think about the properties of salt.
Do they all have the same saturation level?
Do they have the same solubility?
Are they both soluable in water?
Both soluable in water.
500
Give me an example of an alloy.
Answers willl vary, look in your text
500
What is a property of oxygen or O2?
How many atoms and how many molecules?
it is colorless and has 2 atoms and 1 element, oxygen.