Mixtures & Solutions
A mixture in which particles can be seen and easily separated by settling or filtration is classified as what kind of mixture?
A suspension
When you mix baking soda and vinegar, what visible signs indicate a chemical reaction has occurred?
Bubbles\fizzing\gas production
Which of the following are PRODUCTS?
H2O + CO2 → H2CO3
H2CO3
What are chemical compounds and resources made by humans?
What are synthetics
What type of mixture is whipped cream?
colloid
Are rocks in water a Heterogeneous or a Homogeneous mixture?
Heterogenous
When you cut down a tree is this an example of a chemical or physical change?
This is an example of a physical change.
What kind of reaction is this:
2H2O2 →2 H2O + O2
Decomposition
A water bottle is made out of plastic. What is plastic an example of?
polymer
What is an open system?
Answer: When matter can escape and enter.
What is the difference between a homogenous mixture and a heterogeneous mixture?
heterogeneous is different throughout, homogeneous is the same throughout
What happens when a chemical reaction occurs?
A new product is formed and atoms are rearranged.
What is The Law Of Conservation of Mass?
Nothing can be created or destroyed; it can only change form.
Is petroleum a synthetic or a natural resource?
A Natural Resource
How many atoms are in 3Ag2S?
Answer: 9
What is a factor that affects solubility?
Temperature or Pressure
How does the catalyst affect the chemical reaction?
Speeds up the chemical reaction/lowers activation energy
How many Hydrogen are in 2NH3?
There are 6
Is polyester a synthetic or a natural resource?
A Synthetic
What type of chemical reaction is 2H2+O2=2H2O?
Answer: synthesis
What are the three main types of mixtures?
Colloid, suspension, and solution
What kind of reaction needs a continuous source of energy?
endothermic
How many total oxygens are in this equation?
4Fe+2O3 -->2Fe2O3
12 total, 6 per side
A polymer is a substance that has a molecular structure consisting entirely of a large number of similar units bonded together. What are those units called?
Monomers
What type of chemical reaction is this?
Zn+2HCL=ZnCl2+H2
single replacement