What are Atoms?
The building blocks of life
A group of the same type of atom
Two elements chemically combined
What are Elements?
What are Compounds?
What does Br, Mg, Fe and Zn stand for?
Zinc
Francium
Boron
Iron
Bromine
Gold
Magnesium
Potassium
What are the symbols for Copper and Sodium?
Co
Cu
C
So
Na
Nd
In CaCO3, there is 1 Calcium and 3 Cobalt.
How many Elements are there?
118
114
116
112
Which diagram could be showing Carbon Dioxide?
A
B
D
Which diagram could be showing Helium and which could be showing Oxygen?
Oxygen - A , Helium - B
Oxygen - B , Helium - C
Oxygen - B , Helium - A
Oxygen - A , Helium - D
What is Sodium + Chlorine → Sodium Chloride as a symbol equation?
Na + Cl2 → NaCl2
2Na + Cl → 2NaCl
Na + Cl2 → 2NaCl
2Na + Cl2 → 2NaCl
Which of these are properties of metals?
Shiny
Dull
High density
Low density
Malleable
Brittle
Some are magnetic (iron, cobalt and nickel)
None are magnetic
Sonorous
They make a dull sound
Which diagram shows a mixture?
Left
Right
Neither, both show compounds
What is the correct order for obtaining salt from a mixture of sand and salt?
dissolving in water - filtration - evaporation
dissolving in water - evaporation - filtration
filtration - dissolving in water - evaporation
filtration - evaporation - dissolving in water
Por favor espera - en proceso…