Formulas and compounds
What is the formula for water?
H2O
What element has 6 protons
What is Carbon
What state of matter has a definite shape and volume?
Solid
What subatomic particles has a positive charge?
What does pH measure?
Acidity
What is the formula for carbon dioxide?
CO2
If oxygen's mass number is 16 how many neutrons are present?
8
What is the process of a liquid turning into a gas?
Evaporation
What type of bond shares electrons between atoms?
Covalent bond
Which metal exists as a liquid at room temperature?
Mercury
What is the formula for table salt?
NaCl
What is the chemical symbol for Sodium?
Na
What is the pH of a neutral solution?
7
Does exothermic release or absorb energy?
Release
What is the formula for ammonia?
NH3
What elements sit on the "staircase"
What are metalloids
What is the process of a solid turning directly into a gas called?
Sublimation
What type of reaction occurs when two substances combine to form one product?
Synthesis reaction
Does endothermic release or absorb energy?
Absorb
What is the chemical formula for Methane?
CH4
Which element has the atomic number 8?
Oxygen
What happens to particles when the temperature increases?
They move faster
Balance this equation,
H2+O2->H20
What is avogadros number?
6.022 x 10^23