balancing equations
2CO + O2 =?
2CO2
Metal that is brittle
Zinc
Rice and water
Filtration
Mass can be measured on a ___.
balance
Electrons present in outermost shell of an atom are _____
valence electrons
BaCl2 + 2NaOH
BaCl2 + 2NaOH
Metal used for making aircraft body
Aluminium
Sugar and water
Evaporation
A person’s ___ is different on a high mountain than at sea level.
weight
Mass of atom is concentrated in:
nucleus
3NaOH + H3PO4
Na3PO4 + 3H2O
Metal used in making electric cables
Copper
Oil and water
Separating funnel
Object’s ___ is pull of gravity on the object.
weight
Atoms of the same element have identical _____
atomic number
H2 + F2
2HF
Metal that is best conductor of electricity
Silver
Sand and sugar
Solid in solid heterogeneous
The intermolecular force of attraction is strongest in :
Solids
Positively charged constituent of atom is:
Proton
2Na + Cl2
2NaCl
Metal used in electric bulbs
Tungsten
Sand and water
Solid in liquid heterogeneous
The intermolecular force of attraction is weakest
Gases
Negatively charged constituent of atom is:
Electron