Chemistry
Biology
Physics
100

The basic unit of a chemical element.

What is an atom?

100

The ecosystem that organisms live and interact together.

What is a community?

100

The different types of charges

What are positive, negative and neutral charges?

200

The term referred to the number of protons in an atom.

What is an atomic number?

200

The cell organelle that produces proteins for the cell

What are ribosomes?

200

The objects attract to neutral and unlike charged objects

What do charged objects attract to?

300

Three particles that make up an atom.

What are protons, neutrons and electrons?

300

The three types of muscle tissue

What is skeletal, smooth and cardiac tissue?

300

The insulators become negatively charged

Why do negatively charged insulators charge with extra electrons?

400

The indications a chemical change occurred. 

What is the change of colour, odor, change of temperature, formation of bubbles and formation of a solid?

400

The particles that move from an area of higher concentration to one of lower concentration and only the solvent molecules are free to move to equalize concentration.

What is the difference between diffusion and omosis?

400

The electrons transferred when charged by friction 

Why are they transferred by rubbing action or friction?

500

The Canadian scientist that named and studied the nucleus.

Who is Ernest Rutherford?

500

The function of stomach acid.

Why does acid provide conditions for enzymes and kill bacteria?

500

The static electricity in winter 

Why is the winter more dryer than in the summer?

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