Chemistry
Respiration is E........................
Exothermic
How man electrons are in the outer shell of a calcium (group II) atom?
2
When an object has an EXCESS of electrons, it has a ________________ charge.
Negative
The ultimate source of energy for all organisms in life is the___________
Sun
What is the role of Mitochondria in a cell?
Produce enrgy
Combustion is an E.......................reaction.
Exothermic
Magnesium + oxygen -->
Magnesium oxide
Lightning is a discharge of ______________ electricity.
static
This relationship is ______________ where both species involved benefit from the interaction.
symbiotic
The system responsible for maintaining a constant environment in our body.
Homeostasis
What are the products to finish the word equation for a combustion reaction
Fuel(wood) + oxygen →
carbon dioxide + water vapour + energy
Metal + acid → _________+ _________
a salt + hydrogen
When light globes are in parallel, the circuit has more/less resistance than if they were connected in series.
less
Mushrooms and other fungi are responsible for breaking down dead organic matter. In the food web, they are called ______________
decomposers
The processes that maintains life and allows an organism to grow and reproduce, maintain its structure and respond to its environment.
Metabolism.
Predict the products for:
Copper Carbonate + Hydrochloric acid →
Copper chloride + carbon dioxide + water
Predict the products....
sodium hydroxide + hydrochloric acid →
sodium chloride + water
If two light globes are in series they are brighter/dimmer/same brightness than if they were in parallel
dimmer
What is the term used to describe the range of different species in a community?
Biodiversity.
If there's too much glucose in the blood, a hormone instructs target cells in the liver and muscles to absorb glucose. The hormone is called __________and it is produced by the_____________.
Insulin
Pancreas
What is the chemical formula for magnesium chloride
MgCl2
Nitrogen is a group 15 element. What is the charge of a Nitride Ion?
-3
Current is the flow of c___________
charge.
Which trophic level (produce, apex, secondary, primary) has the lowest energy?
Apex
The movement of substances from an area of high concentration to an area of low concentration.
Diffusion.