Matter & Energy
When electrons jump energy levels they absorb a
What is a photon
50 grams is how many kg
What is 0.05 kg
The lightest of the subatomic particles is the
What is an electron
A group of elements that are extremely unreactive and rarely found in combination with other elements
What is a noble gas
Mass number of an atom of C with 8 neutrons
What is 14
The amount of space occupied by a substance is its
What is volume
0.001 has how many significant figures
What is one
The atomic number of an atom is equal to the number of
What is a proton
Which element has a higher ionization energy, K or Br
What is Br
Written in scientific notation, 0.000 000 77 is
What is 7.7 × 10^ -7
mL is the abbreviation for
1.0200 * 402.0
What is 410.0
Elements that have the same atomic number, but different number of neutrons
What is an isotope
Valence electrons are electrons located
What is the outermost energy level of an atom
A 25 mL liquid sample has a mass of 50.0 g. The density of the sample is
What is 2.0 g/mL
State of matter that can be compressed.
The temperature of liquid nitrogen is -196 °C. What is the corresponding reading on the Kelvin scale
What is 77 K
to raise the temperature of 1 g of the substance by 1 °C
What is specific heat
An element that is said to loose valence electrons easily has a strong
What is a metallic character
An unknown liquid has a density of 66 g/mL and a mass of 364 g. What is the volume
4 mL
Compounds can be broken down into their elements by
Written in scientific notation, 680 000 is
What is 6.8 × 10^5
An element has the characteristics of being solid, shiny, malleable, and a good conductor of heat
What is a metal
[Ar] 4s23d104p5
What is Br
The number of joules needed to raise the temperature of 32 g of water from 10 °C to 50 °C is ________. The specific heat of water is 4.184 J/g °C.
What is 5000J