Matter,atomic structure, and the periodic table
Define atom
Smallest basic building block of life
Which type of radiation can penetrate through most substances - even lead ?
Gamma ray
A chemical equation is balanced when _____
total number of atoms for each atom is identical on both sides
How many hydrogen atoms are in the compound ammonium phosphate , (NH4)3PO4?
12
If you increase the temperature of a gas in sealed container, particles of the grass will move_____, collide ______, and at a greater _____.
faster,more,force
In covalent bonds , electrons are ________ between ____ ______
shared, non-metal
Define Nuclear fission.
Process of splitting nucleus of heavy atoms
How do you balance a chemical equation?
Change coefficients, move over subscript
What is the molar mass of Pb(NO3)4
around 455.22 g/mol
If you travel 500 kilometers in 5 hours, your average speed is ______ km/h.
100
In ionic bondss, electrons are transferred between _______ and ____ ______
metals and non-metals
An isotope of lead has a half-life of 22 years.if 1.0 grams of lead-210 disintegrates over a period of 88 years, how many grams of lead-210 would remain?
0.0625 grams
1N2+3H2 arrow 2NH3 ( this equation has already been balanced) .
How many reactants are in the equation?
4
what is the mole ratio of AL to Ca?
2:3
What is the net force acting on the object above if it is being pushed to the left at 12 N and [pulled to the right at 3 N?
9 N
ionic
How does a nucleus change when it undergoes beta decay?
Atomic nuclear emits alpha particles
1N2+3H2 arrow 2NH3 ( this equation has already been balanced).
What is the coefficient for H2?
3
What are the property of bases and acids
bases:bitter , slippery, greater than 7
Acids:sour, less than 7 ph
Tad is a weightlifter. Calculate the work he does when he lifts 185 N a distance of 2.2 m.
(equation is W=F X D)
407J
an isotope has 17 protons, 19 neutrons, and 18 electrons. Identify the correct atomic number.
17
What is a drawback, or negative impact, of using nuclear reactions to generate power?
Highly radioactive , accidents can be catastrophic
1N2+3H2 arrow 2NH3 ( this equation has already been balanced). How many atoms of hydrogen are on each side of the equation
6
12
double question!
1.The momentum of an object depend on the ____ and _______.
2.What is the resistance of a light bulb that carries 0.65 A when connected to a 3.0 V battery?(V=iXR)
1.Mass and velocity
2.4.6 ohms