When you notice that a car is red, shiny, has 4 wheels and is smooth, you are noticing this type of property.
What are physical properties?
100
The atomic number of an element represents how many of these particles are in the nucleus of each atom of that element.
What are protons?
100
The acidity or alkalinity of a substance is measured using this scale.
What is the pH scale?
100
The law that states energy cannot be created or destroyed, only transferred or transformed is known as this.
What is the Law of Conservation of Energy?
100
During this phase change in the water cycle, water vapor releases stored heat as it changes back to a liquid.
What is condensation?
200
According to this law, when substances interact to form new substances, the total amount of matter doesn't change.
What is the Law of Conservation of Matter?
200
The members of this category of elements tend to be solid, gray or silver in color, have high melting points and are good conductors.
What are metals?
200
This rating on the pH scale indicates that a substance is neither acidic or basic.
What is 7?
200
The speed of a wave can be calculated by multiplying these two measurements together.
What are frequency and wavelength?
200
Scientists use this measurement to divide our atmosphere into 4 unique layers.
What is temperature?
300
Materials that are made of two or more substances but are not chemically combined, like a bowl of Lucky Charms, are known by this term.
What are mixtures?
300
The most reactive metals on the periodic table, these elements are sometimes known by their column number: 1.
What are alkali metals?
300
These substances react with most metals and are known to be corrosive.
What are acids?
300
In this type of circuit, current and device efficiency decrease as new devices are added.
What is a series circuit?
300
During photosynthesis, plants take this gas from the atmosphere and use sunlight to convert it into a form of sugar.
What is carbon dioxide?
400
An example of this type of property is the inability to react with other substances.
What is a chemical property?
400
The most nonreactive of all elements, these substances are found in the column 18 on the table.
What are noble gases?
400
According to the pH scale, the strongest alkaline substance would have this rating.
What is 14?
400
Thermal energy is transferred directly from one particle to the next like a line of dominoes during this type of energy transfer.
What is conduction?
400
Bacteria in the soil and in plant roots, and lightning, carry out this process to change a useless gas from the atmosphere into a nutrient that is vital to plant growth.
What is nitrogen-fixation?
500
This is a substance represented by a chemical formula - like C6H12O6. It contains more than one atom and cannot be broken down by physical means.
What is a compound?
500
This category of elements only has 7 members. That's because their properties are not quite metals and not quite nonmetals.
What are metalloids or semi-metals?
500
Using one of the terms weak, moderate or strong - a substance with a rating of 2 would be considered this type of substance.
What is a strong acid?
500
One of the headlights on your favorite toy car gets broken and goes out. But you notice that the other headlight remains on. That means the headlights in your toy car must be wired as this type of circuit.
What is a parallel circuit?
500
These organisms break down dead plants and animals so that the chemicals in those dead organisms return to the environment.