Chemistry
What is the difference between physical change and chemical change?
Physical Change: a change that does not produce a new substance ex. Ripping paper
Chemical Change: the change a substance goes through to produce a new substance
What are the phases of mitosis?
Prophase
Metaphase
Anaphase
Telophase
Define the following...
Luminous
Non-luminous
Luminous: give off light by themselves
Non-luminous: only reflect light from other sources
What is a feedback loop?
A process in which the result acts to influence the original process
What is the Albedo Effect?
A measure of how much of the suns radiation is reflected
Write the chemical formula and name for the following ionic compound.
lithium and nitrogen
Chemical Formula: Li3N
Name: Lithium Nitride
What are the 2 types of tissue found in vascular system? and provide the function for each.
Xylem: Transport water and dissolved materials from materials from roots to the leaves and stems of the plant
Phloem: Transport dissolved food material and hormones throughout plants
What are the definitions for Specular reflection and Diffuse Reflection?
Specular reflection: smooth surface
Diffuse Reflection: irregular/rough surface that you can't see a clean reflection
What does CFC stand for?
Chlorofluorocarbon
What is Phosphorescence?
What is a diatomic molecule? and what elements are diatomic?
Diatomic molecule: consists of atoms of the same kind
HoFBrINCl
What are the 4 tissue types?
List them
Epithelial tissue
Connective tissue
Muscle tissue
Nerve tissue
State the electromagnetic spectrum from most energetic to least
Gamma Ray, X ray, Ultraviolet, Visible light, Infrared, Microwave, Radiowave
What are the 4 components of Earth's climate system?
Atmosphere, Hydrosphere, Lithosphere, Living things
Give 3 reasons on why cell division is important?
1. Reproduction
2. Growth
3. Repair
What are 4 indicators that a substance is an acid?
1. Litmus → red
2. phth → clear and colourless
3. sour
4. conducts electrcity
What are the 5 main organs in the digestive system in order?
Mouth
Esophagus
Stomach
Small Intestine
Large Intestine
The speed of light in a solid is 1.54x108m/s.
What is the index of refraction?
n=1.95
What are 2 effects of deforestation?
1. It stops the forest from absorbing carbon dioxide from atmosphere.
2. Releases some of the absorbed carbon back in the atmosphere as CO2
What are 5 clues of chemical change?
1. new colour
2. heat/light is produced
3. bubbles of gas formed
4. a solid forms (precipitation)
5. change is difficult to reverse
Write a word equation for the following double displacement reaction.
CaCl2 and Na2SO4 react to form NaCl
Calcium Chloride + Sodium Sulfate → Calcium Sulfate + Sodium Chloride
Define the following
Benign Tumour
Malignant Tumour
Carcinogen
Benign Tumour: tumour does not affect surrounding tissue other than by physically crowding them
Malignant Tumour: interferes with the function of surrounding cells, a cancerous tumour
Carcinogen: environmental factors that cause cancer
Calculate the speed of light in a diamond with an index of refraction of 2.42
v=1.24x108m/s
What is evidence of climate change? Provide 5 pieces of evidence
1) Rising Temparature
2) Melting Glaciers
3) Changes in severe weather
4) Changing Season
5) Rising sea level
6) changes in ecosystem
List the organs that are used in sequential order for the path air takes during inhalation and exhalation
Nose/mouth → trachea → bronchi → bronchioles → alveoli