Isotopes
Thermal and Phase
Mole
sig figs and conversions
Terms and definitions
Terms and definitions again
100
How many neutrons are in Boron-11
What is 6 neutrons?
100
When a sample of liquid is heated its thermal energy _______ and its phase energy ________.
What is thermal energy increases and phase energy stays the same.
100
How many Hydrogen atoms are in (NH4)3PO4
What is 12?
100
The number of significant figures in 0.084930
What is 5?
100
Two or more elements in a fixed mass ratio.
What is a compound?
100
Two types of mixtures.
What are homogenous and heterogeneous?
200
How many protons, neutrons, and electrons?
protons: 11
neutrons: 12
electrons: 10
200
When a liquid is condensing its thermal energy ______ and its phase energy ________.
What is thermal energy stays the same and phase energy decreases.
200
The number of moles in 18 g of H2O.
What is 1 mole?
200
The number of significant figures in 9076400.
What is 5?
200
Determines the atomic number of an element.
What is the number of protons?
200
A substance that is not broken down by physical or chemical means.
What is an element?
300
What are the masses of these isotopes?
What is 10 and 11 g/mol?
300
When water freezes, what is occurring with energy and particle arrangement.
What is releases energy to the environment and arrangement becomes more fixed and orderly.
300
The mass of 0.87 moles of NH4
What is 16 grams?
300
The answer of 8.76 / 9.065 with correct significant figures.
What is 0.966?
300
What does diatomic mean?
What are two atoms of an element that always exist as pairs- usually gasses?
300
A substance whose composition determines its physical properties.
What is a mixture?
400
Which is not a pair of isotopes?
3216 S, 3316 S
126C, 146C
168O, 167O
168O, 167O
400
When water boils, does the temperature change, and what is inside the bubbles?
What is the temperature does not change and water vapor is inside the bubbles.
400
Atoms of oxygen in 20 moles.
What is 1.2 x 1025 atoms?
400
1200 ml in Liters
What is 1.2 L?
400
Empirical.
What is the determined formula of a compound based on data?
400
How does changing the amounts of reactants in a reaction affect the resulting compound's formula?
What is it has no effect.
500
What is the average molar mass of this element?
What is 24.32 g/mol
500
Work it out on paper! Water boils, absorbing 100 kJ from the environment. What mass of water evaporates?
Constants: Hf= 334 J/g
Hv=2260 J/g
c = for liquid water 4.18 J/g C
c= for solid water 2.10 J/g C
What is 44.2 g?
500
Grams of FeO in 3.04 x 1023 atoms.
What is 36.3 grams?
500
3.7 x 10 -3 g in mg.
What is 3.7 mg?
500
Used to separate a common compound such as water into it elements.
What is electrolysis?
500
Intrinsic property of matter that does not change.
What is mass?
600
What element is this? 
What is Boron?
(0.813 x 11) + (0.187 x 10)= 10.8
600
A 100 g sample of liquid at 0 degrees C ends up as ice at -10 degrees C. How many energy is released?
Constants: Hf= 334 J/g
Hv=2260 J/g
c = for liquid water 4.18 J/g C
c= for solid water 2.10 J/g C
What is 35,500 J?
600
The percent by mass of oxygen in H2O.
What is 89%?
600
100 kg as mg.
What is 100,000,000 mg?
600
6.022 x 10 23 particles are in one of these, and the masses on the periodic table equal one of these.
What is a mole?
600
Two units that frequently are used to describe volume.
What is milliliters (ml) and cubic centimeters (cm3)?