Chemistry
Chemistry
Physics
Ecology
Body systems
100

Respiration is E........................

Exothermic 

100

How man electrons are in the outer shell of a calcium (group II) atom?

2

100

When an object has an EXCESS of electrons, it has a ________________ charge.

Negative

100

The ultimate source of energy for all organisms in life is the___________

Sun

100

What is the role of Mitochondria in a cell?

Produce enrgy

200

Combustion is an E.......................reaction. 

Exothermic 

200

Magnesium + oxygen --> 

Magnesium oxide 

200

Lightning is a discharge of ______________ electricity.

static

200

This relationship is ______________ where both species involved benefit from the interaction.

symbiotic

200

The system responsible for maintaining a constant environment in our body.

Homeostasis 

300

What are the products to finish the word equation for a combustion reaction

Fuel(wood) + oxygen → 

 carbon dioxide + water vapour + energy  

300

Metal + acid → _________+ _________

 a salt + hydrogen 

300

When light globes are in parallel, the circuit has more/less resistance than if they were connected in series.

less

300

Mushrooms and other fungi are responsible for breaking down dead organic matter. In the food web, they are called ______________

decomposers 

300

The processes that maintains life and allows an organism to grow and reproduce, maintain its structure and respond to its environment.

Metabolism.

400

Predict the products for:

Copper Carbonate + Hydrochloric acid →

 Copper chloride + carbon dioxide + water 

400

Predict the products....

sodium hydroxide + hydrochloric acid → 

sodium chloride + water 

400

If two light globes are in series they are brighter/dimmer/same brightness than if they were in parallel

dimmer

400

What is the term used to describe the range of different species in a community?

Biodiversity.

400

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 

500

What is the chemical formula for magnesium chloride

MgCl2

500

Nitrogen is a group 15 element. What is the charge of a Nitride Ion?

-3

500

Current is the flow of c___________

charge.

500

Which trophic level (produce, apex, secondary, primary) has the lowest energy?

Apex

500

The movement of substances from an area of high concentration to an area of low concentration.

Diffusion.

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