TRUE/FALSE
All matter is made up of tiny particles called ATOMS?
TRUE
A negatively charged subatomic particle that orbits the nucleus of an atom.
What is an electron?
A nail getting bent is an example of a ________ change.
What is a physical change?
An atom is ____when its outermost electron shell is full.
What is stable?
The process when a liquid becomes a solid is called what?
What is freezing?
SOLIDS do not have a fixed volume or fixed shape.
False, What is GAS.
A positively charge subatomic particle in the nucleus of an atom.
What is a proton?
________ mixtures are molecules that are not mixed up in an even distribution. (They are not uniform)
What is a heterogenous Mixture?
The second energy level in an atom can hold up to how many electrons?
What is 8 Electrons?
What is a pure substance that cannot be separated into a simpler substance physically or chemically?
What is an element.
CONDENSATION is the process when liquid becomes a gas
False; Evaporation
The total number of protons and neutrons in the nucleus of an atom.
What is the atomic mass of an atom?
_____ are good conductors of heat and electricity.
What is a Metal?
In the periodic table, a horizontal row is called a ___ and a vertical column is called a _______.
What is a period and a group?
What affects how fast or slow particles will move?
What is tempature?
The periodic table is organized into metals, non-metals and metalloids
TRUE
The total number of protons in an atom.
What is the atomic number of an atom?
______ is the substance being dissolved?
What is an SOLUTE?
Which metal group is shiny, ductile, and malleable?
What is Alkaline Earth?
What is it called when one or more substances/elements are changed to new substances?
What is a Chemical Reaction?
A REACTION is the new substance created after a chemical reaction.
False; Product/Solution
The subatomic particle that determines the chemical identity of an atom/element.
What is a proton?
Elements form chemical __________ when they COMBINE chemically.
What is a bond?
DRAW a BOHRS Model of Magnesium. Label the number of PROTONS, ELECTRONS AND NEUTRONS
WHAT IS
12 PROTONS
12 ELECTRONS
12 NEUTRONS
How do you know a chemical reaction has occurred?
You would observe Evaporation, change in color, change in temperature, or a change in properties.