Changes in Matter
Bending a nail, dissolving salt in water or coloring a piece of paper are all examples of which type of change in matter?
Physical
State of matter with definite volume but no definite shape?
True or False? Atoms join with other atoms to make new substance?
True
A type of well-mixed mixture where once substance is dissolved in another substance?
Solution
Metals
A property that describes how matter changes into something new is called?
Chemical Property
State of matter where particles are moving very quickly and in all directions?
Gas
Positively charged particle in an atom?
Proton
A substance formed when atoms of 2 or more elements join together chemically?
Compound
Which elements have properties of both metals and nonmetals?
Metalloids
Color, density and melting point are all examples of?
Physical properties
Type of matter with the least amount of thermal energy?
Solid
Location and charge of a neutron?
Oxygen, Nickel and Potassium are all examples of which type of matter?
Elements
Who devised the 1st Periodic Table of Elements?
Mendeleev
True or False; Fireworks exploding and vinegar reacting with baking soda to produce carbon dioxide are examples of chemical changes?
True
Evaporation
Charge and location of an electron?
Electron cloud or orbitals and negative
Salad dressing, Windex and fruit salad are all examples of which type of matter because they can be separated and maintain their own identity?
Mixtures
How are elements on the PT listed?
Increasing atomic number
List 5 examples of matter?
bike, banana, daisy, bed and oxygen
Change of state from a liquid to a solid?
Freezing
What is the 2-8-18 rule?
There is a maximum of 2 electrons in the first orbital, 8 electrons in the second orbital, 18 electrons in the third orbital
In a solution of salt water, what is the solute and solvent?
Solute- salt
Solvent-water
If atomic mass is 79 amu and atomic number is 55, how many protons, neutrons and electrons?
P=55
E=55
N=24