Chemistry
What number is Gold on the periodic table?
79
Which type of animal cell is able to divide into different types of specialized cells?
stem cells
What type(s) of image does a diverging lens produce?
virtual
What is the most likely cause of current climate change?
fossil fuels - coal, oil and gas
A substance that donates a pair of electrons to form coordinate covalent bonds is called?
Lewis base
Which organelles are present in plant cells but not in animal cells?
cell wall, plastids, chloroplasts
In which case does light bend toward the normal?
When light passes from a less dense to a more dense substance,
Which gasses are the principal contributors to the natural greenhouse effect?
Carbon dioxide (CO2)
What is the pH of pure water?
7
What are cells that contain only half of the DNA from each parent called?
gamete
What is the process by which materials that absorb light energy release light at a later time?
phosphorescence
How does ice influence Earth’s climate?
Changes in the amount of sea ice can disrupt normal ocean circulation, thereby leading to changes in global climate
What is the last group on the periodic table called?
Noble gases
Which phase of mitosis is marked by chromosomes lining up along the middle of the cell?
metaphase
Where should you place an object in front of a converging lens to produce an inverted, real image that is the same size as the object?
2F point
Why is it difficult for scientists to accurately predict future climate?
Because it is difficult to project far-off future emissions and other human factors that influence climate
What is the name of the compound with the formula H3PO4?
Phosphoric acid
Which body systems work together to provide nutrients to all of your cells?
the circulatory system
Which medium has an index of refraction of exactly 1.0?
Air
How does deforestation affect the amount of carbon dioxide in the atmosphere?