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Vocabulary
Atoms
Elements
States of Matter
Apply Your Knowledge
100
A substance with a pH greater than 7 is called ____________________.
What is a base?
100
What is an atom?
What is the smallest unit of an element with the properties of that element?
100
What is an element?
What is a pure substance made up of only one kind of atom?
100
In which state are molecules close together, and they can move freely sliding over one another?
What is liquid?
100
Why isn't water on the Periodic Table?
What is because water is a compound and is made up of two substances; the elements on the Periodic Table are one substance?
200
What are neutrons?
What are subatomic particles with no charge?
200
What is at the center of an atom?
What is the nucleus?
200
There are 112 known elements arranged in a table. What is this table called?
What is the Periodic Table of Elements?
200
Which state of matter has no definite shape or volume?
What is gas?
200
You want to develop a new recipie for cookies. Describe an experiment to show which recipie is best.
What is change only one variable at a time?
300
A substance formed of 2 or more elements.
What is a compound?
300
What subatomic particles are found within the nucleus?
What ar the protons and neutrons?
300
How are the elements organized in the Periodic Table?
What is by atomic number - the number of protons in the nucleus?
300
What change occurs when a substance is heated to its boiling point?
What is it changes from a liquid to a gas- a change in the state of matter?
300
Breathing on a cold car window causes water droplets to form. Why?
What is the cold is changing the warm water vapor from your mouth to condense and turn into a liquid because heat is being removed?
400
What are metals?
What are substances that are shiny, malleable, and conduct heat and electricity?
400
Name the negatively charged subatomic particle.
What is the electron?
400
How are the elements with similar properties displayed in the Periodic Table?
What is in columns or by families?
400
Why do solids have a definite shape?
What is because the atoms are held tight together in a fixed position?
400
Hydraulic machines use liquid inside a pipe. Why don't they use a gas?
What is because the gas condenses too much.
500
Metals that can be easily bent or rolled have a property called __________.
What is mallealability?
500
What determines the atomic number of a substance?
What is the number of neutrons in an atom?
500
What do you know about the first column of the Periodic Table?
What is the elements explode in water?
500
Why does gold have a high melting point?
What is the atoms/molecules have a strong attraction to one another?
500
Suppose a lake was polluted by acid rain, how could you make it safe again?
What is add a base like limestone to the lake to neutralize the acid?