Chemistry c1 Flashcards
What are the three types of matter and what does it reflect
Solid
Liquid
Gas
Reflects how strong the forces of attraction are % between the particles of the material
What possition are solids in
Lattice formation
How does heat affect a solid
The hotter the object is the more they vibrate causing a slight growth
What formation are liquids in
Randomly placed and move freely
How do particles in gasses move
Freely and in straight lines
What happens to solids particles when they get heated
Gain energy
What does the molecular formula show
The number and type of atoms jn a molecule
What do ionic compounds form
Giant lattices
Whats a exothermic. Reaction
A reaction that gives out energy usually shown in a rise in temperature
Whats a endothermic reaction
A reaction that takes in energy which is shown in a loss of temperature
What type of reaction is desolving ammonium chloride
Endothermic
What is the bond energy calculation
Overall energy change = energy required to break bonds - energy released
Explain the evolution of atmosphere
Volcanos gave out gasses which formed the early atmosphere as the earth cooled water vapour became oceans , carbon dioxide dessolved into oceans causing sediments then green plants formed and carried out photosynthesis then marine animals evolved
Word equation for photosynthesis
Carbon dioxide + water -> glucose + oxygen
Symbol equation for photosynthesis
6CO2+ 6H2O —> C6H12O6 + 6O2
Name 3 greenhouse gasses
Carbon dioxide methane water vapour
What radiation does the sun give
Electromagnetic radiation
Reasons why bad atmosphere
Deforestation, burning fossil fuels, agriculture, creating waste
Test for chlorine
Chlorine bleaches damp litmus paper
Test for oxygen
A glowing split will relight
Test carbon dioxide
Bubbling carbon dioxide through calcium hydroxide makes the solution turn cloudy
Hydrogen test
Squeaky pop test
Whats a fuel cell
A electrical cell thats supplied with a fuel and oxygen
What does the reaction between hydrogen and oxygen give out
Releases energy
