Chemistry
Workplace Hazardous Materials Information System
What does a flat horizontal line on a position time graph represent?
No motion
Grass --> Rabbit --> Fox --> Coyote
What is this an example of?
Food Chain
One word: animals that eat only plants
herbivore
What annoys Miss Dunn the most in class?
Standing by the door
What is the difference between a cation and an anion?
Cations are positively charged ions (they form by losing electrons)
Anions are negatively charged ions (they form by gaining electrons)
How is velocity different than speed?
Speed is how fast something moves, while velocity is how fast it moves and in what direction.
What is biomagnification?
Biomagnification is the process where toxins, like mercury, become more concentrated in organisms at higher levels of a food chain.
What does the atomic number tell you?
The atomic number tells you the number of protons and electrons in a neutral atom.
What is Miss Dunn's favorite color?
Pink
What are the names of these compounds
CO
MgI2
Carbon monoxide
Magnesium Iodide
A bike travels 300 m in 60 s. Is it moving faster or slower than an object traveling 10 m/s?
The bike is moving slower.
What do decomposers do?
Decomposers break down dead organic matter, recycling essential nutrients back into the soil and environment.
What is a consumer?
A person or organism that eats another organism.
Where did Miss Dunn grow up?
Prince Edward Island
What is the name of these compounds
NaOH
FeCl2
sodium hydroxide
Iron (II) Chlorde
A skateboarder slows from 10 m/s to 0 m/s in 5 s. What is the acceleration?
The skateboarded has an acceleration of -2 m/s2. This means the skateboarder is slowing down.
What is deforestation?
The removal or destruction of forests by humans, but not replanting any for the future.
A car accelerates from 5 m/s to 25 m/s in 8 seconds. What is the cars acceleration?
The car accelerates at 2.5m/s2
What is Miss Dunn's favorite music genre?
country
Name and describe the three types of reactions?
1) Synthesis - two elements coming together to create one compound
2) Decomposition - one compound getting broken into small pieces
3) Displacement - when one element gets switched with an element in a compound.
A car moves at a constant velocity of 15 m/s for 10 s. How far does it travel?
The car travels 150m in 10 seconds.
A new predator is introduced to an island. What might happen to biodiversity?
Biodiversity would likely decrease.
The new predator could reduce or eliminate prey species, especially if those species have no natural defenses against it. This can disrupt the food web, cause population imbalances, and may lead to local extinctions, lowering overall biodiversity.
What is the name of the following compounds
NaCl
HCl
Li2CO3
Sodium chloride
hydrogen chloride
lithium carbonate
What color car does Miss Dunn drive?
Red