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OH Density!
Periodic Table
It Matters
Atoms and Bonding
DUH?
100
A unit of mass is __________
What is a gram
100
The number of protons in the nucleus of an atom
What is the atomic number
100
The state of most substances can be changed. At any given time, the state of substances depends on its ____.
What is temperature
100
A bond that forms between oppositely charged ions
What is an ionic bond
100
Whipped cream, smog, mayonnaise and soapsuds are all _________
What is a colloid
200
Volume is measured in units of ____ for liquids and ____ for solids
What is a mL and a cubic meter
200
An atom or group of atoms that has an electrical charge
What is an ion
200
A pure substance is either a _____ or a ______.
What is an element or a compound
200
An attraction between a positive metala ion and the electrons that surround it
What is a metallic bond
200
A temperature scale in which the lowest possible temperature at the zero point, is called absolute zero
What is a Kelvin scale
300
If an object has a density of 30 g/ml, what is the mass of 3 mL?
What is 90 g/mL
300
Created the 1st periodic table
Who is Demetri Mendeleeve
300
A homogeneous mixture of a solvent and one or more solutes is a _____
What is a solution
300
In the compound water the electrons in the bonds are unequally shared between the oxygen and the hydrogen forming a _________
What is a polar bond
300
How does the amount of kinetic energy an object has, affect its temperature
What is the more KE, the higher the temperature
400
An object that floats in water has a density of less than ____
What is 1 g/mL
400
The most reactive group of elements on the periodic table
What is an alkali metal
400
A process by which a solid settles out for a solid/liquid mixture
What is sedimentation
400
If you mix two atoms of hydrogen with one atom of oxygen, you get water. The two reactants in this reaction are _____ and _____
What is hydrogen and oxygen
400
Why are bimetallic strips solids, rather than liquids or gases?
What is solids expand less than liquids or gases
500
What happens to the density of an object as its volume increases due to heating?
What is decreases
500
From top to bottom, the number of ______ stays the same
What are valence electrons
500
A solution that can not dissolve any more solute
What is saturated solution
500
A combination of chemical symbols and numbers that tell which elemetns are present in a molecule nad how many atoms of each element are present
What is a chemical formula
500
A block has the following dimensions: Length = 2 cm Width= 4 cm Height = 10 cm The volume of the block is ____
What is 80 cubic meters