The 7 Characteristics (MRS GREN)
This characteristic involves breaking down nutrients to release energy.
What is Respiration?
This is a group of organisms that can reproduce to produce fertile offspring.
What is a Species?
This property describes a material that is shiny when freshly cut or polished.
What is Lustrous?
ost non-metals are described by this word, meaning they shatter or break easily when hit.
What is Brittle?
This scale ranges from 0 to 14 and tells you how strong an acid or alkali is.
What is the pH Scale?
This process involves getting rid of waste materials, such as carbon dioxide, produced by chemical reactions in the body.
What is Excretion?
A horse and a donkey can have a mule, but a mule is "this," meaning it cannot have babies of its own.
What is Infertile?
If a metal can be hammered into a new shape without breaking, it is described as this.
What is Malleable?
Unlike metals, non-metals do not allow heat or electricity to pass through them easily, making them good "these."
What are Insulators?
Blue litmus paper will turn this color if it is dipped into an acidic solution like lemon juice.
What is Red?
When a plant grows toward the light or a human flinches at a loud noise, they are showing this characteristic.
What is Sensitivity?
This type of identification tool always offers exactly two choices at each step.
What is a Dichotomous Key?
This property explains why copper is perfect for making long, thin electrical wires.
What is Ductile?
This is the only metal that is a liquid at room temperature.
What is Mercury?
A substance with a pH of exactly 7 is described as this.
What is Neutral?
This is a permanent increase in size or number of cells.
What is Growth?
When writing a key, you should avoid using these types of words, such as "big" or "scary."
What are opinions/vague words?
Metals like iron are used for bridges because they are "tough" and can hold a lot of weight without doing this.
What is Breaking/Cracking/Shattering?
Materials are defined as the "these" from which objects are made.
What are Substances?
These types of substances often feel soapy to the touch.
What are Alkalis?
Daily Double! To be called an organism, a thing must show how many of these characteristics? Name them.
What is all seven? What are respiration, excretion, sensitivity, growth, reproduction, movement, growth?
If a scientist finds two parakeets in the wild but they never pair up or mate, she might conclude they belong to different "these."
What are Species?
This word describes a material that makes a deep ringing sound when you hit it.
What is Sonorous?
This non-metal is an exception because it is a good conductor of electricity.
What is Graphite/Carbon?
If a liquid turns Universal Indicator purple, it is a "this" type of substance.
What is a Strong Alkali?