Which of the following is a compound?
Fe
Oxygen
Carbon
Salt
What is salt
100
When the temperature rises, the solubility of a gas does what?
What is decreases.
100
You are trying to check and see if 2 cups of water a day makes your bamboo tree grow better. You have 5 groups. All groups get water except for one bamboo tree. You record your growth in a week. What is the independent variable?
What is the water.
100
Sodium is a solid, liquid or gas?
What is solid.
200
Which of the following is iron oxide?
NH3
Fe3O3
CO2
Fe2O3
Fe2O3
200
What is two ways to increase solubility?
Temperature, Agitation, Surface area.
200
You have NaCl and NH3. As temperature increase, the solubility curve for NaCl is going upwards on a graph but for NH3 it is curving downwards. Which is more soluble?
What is NaCl
200
You are trying to check and see if 2 cups of water a day makes your bamboo tree grow better. You have 5 groups. All groups get water except for one bamboo tree. You record your growth in a week. What is a constant?
The amount of water
200
Fe is a what color and in what state?
What is brownish red, and solid.
300
How many different elements are there?
What is 92
300
The factor that changes in response to the independent variable is?
Dependent Variable
300
You are given a jar of iron fillings, rocks and sugar. How do you separate all three?
What is magnetic attraction, dissolving sugar (filtering) and evaporation.
300
You are trying to check and see if 2 cups of water a day makes your bamboo tree grow better. You have 5 groups. All groups get water except for one bamboo tree. You record your growth in a week. What is the depenedent variable?
The growth of the plants.
300
Describe Chlorine:
A green poisonous gas!
400
To create a ball and stick model of NH3, how many colored balls would you need for nitrogen?
What is one
400
A hypothesis must be what?
What is testable.
400
What method of separating a mixture could you use to identify the different colors present in a marker?
What is chromatography!
400
What factor did the experimenter manipulate that affected his/her results?
The amount of water.
400
Fe2O3 is what compound and what does it look like?
Brittle, redish orange, solid.
500
To make sodium chloride, you need to combine Cl with...?
What is sodium
500
Theory
What is a well tested explanation for a wide range of observations or experimental results.
500
In which type of matter are the elements ALWAYS combined in a specific ration?
mixture
solution
atom
What is compound.
500
What are three steps of the scientific method?
What is state the question, create a hypothesis, perform the experiment, gather data and intepret, create a conclusion and communicate your results.