Stack #326997 Word Scramble

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Question	Answer
Study of the composition and structure of materials and the changes that materials undergo best describes the science of?	chemistry
The branch of chemistry that in cludes the study of materials and process that occur in living things is..	biochemistry
The branch of chemistry that is concerned with identification and composition of materials is..	analytical chemistry
The study of substances containing carbon is	organic chemistry
The branch of chemistry concerned with the properties, changes, and relationships between energy and matter is..	physical chemistry
Basic research is..	carried out for the sake of increasing knowledge
a physical property my be investigated by...	melting ice
two features that destinguish matter are..	mass and volume
An example of an extensive physical property is..	mass
What is an example of an intesive physical property?	color
Quantitative observations are recorded using	numerical info
Qualitative obsevation are recorded using	non-numerical info
a testable statement used for making predictions and carrying out futher experiments is a	hypothesis
The Si units for length and mass are	meter and kilometer
the metric unit for length that is closest to the thickness of a dime is the	millimeter
the symbol for the metric unit used to measure mass is	g
the unit m^3 measures	volume
The SI base unit for time is the	second
A change in the force of Earths gravity on an object will affect it's	weight
To determine density, the quatities that must be measured are	volume and mass
Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in	atomic mass
what are the radioactive elements w/ atomic number from 90 to 103 in the periodic table called?	the actinides
The descovery of the noble gases changed mendeleeves periodic table by adding a new	group
what are the elements with atomic numbers from 58 to 71 in the periodic table called?	the lathanide elements
Elements in a group or column in the periodic table can be expected to have similar	properties
Mendeleev predicted that the spaces in his periodic table represented	undiscovered elements
Mendeleev attempted to organize the chemical elements based on thier	properties
in the modern periodic table, elements are ordered according to	increasing atomic number
The most useful soarce of general info about the elements for anyone associated with chemistry is a	periodic
1/2 the distance btw the nuclei of identical atoms that are bonded 2gether is called the	atomic radius
Who was the school master who studied chem and proposed an atomic theory	John Dalton
A nuclear particle that has about the same mass as a proton, but with no electrical charge is called a	neutron
Rutherford fired positively charged particles at a metal foil and concluded that that most of the mass of an atom was	in the electrons
Who discovered the nucleus by bombarding gold foil with posetively charged particles?	Rutherford
Rutherford's experiments led to the discovery of the	nucleus
Experiments with discovery of the cathode rays led to the discovery of the	electron
The smallest unit of an element that can exist alone or in a combination with other such particles is an	atom
a positively charged particle is a	proton
The atomic number of oxygen,8, indicates that there are 8	protons in the nucleus of an oxygen atom
All atoms of the same element have the same	atomic number
For electromagnetic radiation, c (speed of light) =	frequency times wavelength
In SI, the frequency of electromagnetic radiation is measured in	hertz
On eof the wave properties of electromagnetic radiation, such as light, is	frequency
As it travewls through space, electromagnetic radiation	exhibits wavelike behavior
The distance between two succesive peaks on a wave is its	wavelength
a quantum of electromagnetic energy is called a	photon
The wave model of light did not explain	the photoelectric effect
Mac PLank proposed that a hot object radiated energy in small, specific amounts called	quanta
the emission from electrons from metals that have absorbed photons is called the	photoelectric effect
For an electron in an atom to change from the ground state to an excited state	energy must be absorbed
Atoms are ___ when they are combined	more stable
When atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's	electronegativity
If the atoms that share electrons have an unequal attraction for the electrons, the bond is called	polar
A covalent bond results when ___ are shared	electrons
A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is called a	chemical bond
If two covalently bonded atoms are identical, the bond is	nonpolar covalent
the electrons in volved in the formation of a chemical bond are called	valence electrons
Most chemical bonds are	partly ionic and partly covalent
A chemical bond formed when two atoms share electrons is called a	covalent bond
An otet is = to	8

Created by: twrlrgrl11