Investigating the properties of metals. Scientist divide all the elements into two groups: Metals and non metals. The properties of metals are: Shiny, Malleable, ductile, good conductors of heat and electricity, sonorous. 1 . SHINY : Most metals have a shiny look. 2. Malleable: That means you can hammer or press a piece of metal into a different shape without breaking the metal. 3. Ductile: That means metals can be drawn into wires . 4. Sonorous: This property refers to the ringing sound that metals make when they are hit. 5. Good conductors of heat and electricity. ...
INVESTIGATE HOW TEMPERATURE AFFECTS THE RATE OF DECAY A group of students conducted an experiment to study how temperature affects the decay of organic material. They used slices of bread as the organic material and placed them in sealed containers at four different temperatures: 4°C (refrigerator temperature) 25°C (room temperature) 37°C (human body temperature) 50°C (high temperature) The scientists observed the bread slices over 10 days and recorded the following data: Temperature (°C) Day 2 Day 4 Day 6 Day 8 Day 10 4°C No decay Slight discoloration Moderate discoloration Visible mould spots Significant mould growth 25°C Slight discoloration Moderate discoloration Visible mould spots Significant mould growth Complete decay 37°C Moderate discoloration ...
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