Crazy Chemistry
All About Atoms
Phun with Physics
Im Positive
Change is Good
100
In the periodic table, the most reactive metals are found...
What is group 1
100
What happens when chemical bonds break and new bonds form?
What is a chemical reaction
100
What state of the technology design process involves coming up with ideas or different ways to solve a problem?
What is solution stage
100
The state of matter that has a definite shape and a definite volume
What is a solid
100
All elements are composed of extremely small particles called
What is atoms
200
What do elements in a column in the periodic table have in common
What is the same properties
200
A shorter easier way to show chemical reactions, using symbols instead of words
What is a chemical equation.
200
In the laboratory, volumes of liquids are usually measure with a(n)
What is graduated cylinder
200
Most metals are not
What is liquid at room temperature
200
The surface of water can like a sort of skin due to the property of liquids called...
What is surface tension
300
Each family in the periodic table has its own characteristics based on the number of...
What is valence electrons
300
Give an example of a chemical change
What is burning wood
300
In designing a toy car, considering how much the final product will cost is an example of a
What is a constraint.
300
The force of a gas's outward push divided by the area of the walls of the container the gas is in
What is pressure
300
A material is said to be ductile if
What is it can be pulled out into wires
400
What is the greatest number of valence electrons an atom can have?
What is 8
400
When an atom loses an electron, it becomes...
What is a positive ion
400
What advantage do alloys have over pure metals
What is they resist rust
400
In what form can an ionic compound conduct electricity
What is dissolved in water
400
The measurement of how much matter an object contains is its
What is mass
500
How did chemists change Mendeleevs periodic table in the early 1900s?
They ordered it by atomic number instead of atomic mass.
500
Name the reaction feS + 2HCl -> FeCl2 +H2S
What is double replacement
500
What does the pH scale measure
What is the concentration of hydrogen ions.
500
You can find the pH of a substance by using
What is a litmus indicator
500
Give an example of a physical change
What is dissolving salt in water
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