And on that's on Periodic!
Which has the greater electronegativity?
Cl or Al?
Cl
How many atoms are there in this compound: TiI4
5
When you decrease temperature (heat), what happens to entropy?
It decreases
___________________ is the property of water that causes water molecules to “stick” to other substances. Ex. Glass of water sweats and sticks to a coaster
Adhesion
What causes the circular motion of water as it boils?
Convection
Metals are good conductors of heat and electricity.
True or False.
True
How many atoms are in this compound: NH4OH
7
Explain why thermal expansion happen.
Thermal expansion is caused by an increase in temperature which causes the particles to not only move faster, but also move farther away from one another.
__________describes how water moves against gravity and can travel up a plant’s roots into its stem and leaves.
Capillary action
What is the process called when a metal spoon placed in hot water heats up?
Which group of elements typically has relatively low ionization energy?
Alkali metals
What type of reaction is this?
____Fe + _____Cu(SO4) → _____Fe(SO4) + _____Cu
single replacement
Thermal energy is a type of _______ energy
kinetic
Water is called the ______________ ________________ because of its ability to dissolve so many different substances.
universal solvent
What type of heat transfer occurs when heat is given off by light?
Radiation
A water molecule (H2O) is an example of a covalent bond because
Electrons are shared btween the hydrogen and oxygen
_____N2 + _____H2 → _____NH3
1, 3, 2
A block of aluminum weighing 140 g is cooled from 98.4°C to 62.2°C with the release of 1080 joules of heat. From this data, calculate the specific heat of aluminum.
0.213 J/g °C
Ice floats on water because:
Ice is less dense
Surface tension
How much heat is needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g °C
297 J
How many atoms are there total in H2SO4?
7
___ C2H6 + ___ O2 ---> ___ CO2 + ___ H2O
2, 7, 4, 6
What is the total amount of heat needed to change 2.25 kg of silver at 0.0°C to 200.0°C? heat of silver is 0.129 J/g∙°C
58,050 J
Capillary action of water in a tube is the result of _____ being stronger than _____.
Adhesion, cohesion
The specific heat(c) of copper is 0.39 J / g °C. What is the temperature change (∆T) when 100 Joules of heat is added to 20 grams of copper?
12.82 J