They can both help and hurt the environment. Some chemicals are
necessary such as water, minerals, and the air we breathe. The
exact effects depend on the exact chemicals. Some chemical waste
can harm plants, wildlife, or even humans. Some chemicals such as
phosphates can cause excessive red algae to grow in bodies of
water. Oil and petrochemicals in the water can kill birds and
fish.
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Term1/20
What is the purpose of the scientific method
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Definition1/20
The purpose of the scientific method is to remove as much human bias and opinions from science.
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Term1/20
What do biologists study
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Definition1/20
A biologist is a scientist devoted to and producing results in biology through the study of life. Typically biologists study organisms and their relationship to their environment. Biologists involved in basic research attempt to discover underlying mechanisms that govern how organisms work. Biologists involved in applied research attempt to develop or improve medical, industrial or agricultural processes.
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Term1/20
What is the difference between a strong base and a weak base
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Definition1/20
A "strong" acid (or base) is one that dissociates completely in dilute aqueous solution. One which does not is a "weak" acid (or base). An acid with a pKa (or a base with a pKb) lower than about -2 is considered to be a "strong" acid.
Weak acids and bases can still be quite corrosive. HF is a "weak" acid with a pKa of around 3.2 (which corresponds to only about one molecule out of every 38 or so being dissociated), but it's pretty terrible stuff and will dissolve even glass.
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Term1/20
Which of the following is a strong acid
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Definition1/20
HCI (Hydrochloric acid)
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Term1/20
What kind of fraction has a value less than 1
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Definition1/20
1/2 is less than one.
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Term1/20
What is the purpose of engineers
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Definition1/20
Engineers design new products that you buy. They design
everything from bridges to planes to computers.
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Term1/20
Which sentence suggests the least amount of psychic distance
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Definition1/20
Katia was going to teach them a lesson they'd never forget.
No way, she thought, this is ridiculous.
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Term1/20
How has the scientific community addressed the safety of chemicals
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Definition1/20
scientists test and continue to retest both new and old
chemicals even if they have been tested before
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Term1/20
What ideas about the atom changed when new evidence is discovered
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Definition1/20
Atoms cannot be divided
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Term1/20
How have chemists helped fight leukemia
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Definition1/20
Chemists have developed medicine to fight leukemia.
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Term1/20
What is Ka for H2CO3 aq H aq HCO3 aq
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Definition1/20
Ka= [h+][HCO3-]/[H2CO3]
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Term1/20
What kind of scientist would study the affects of acid rain on a marble statue
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Definition1/20
Geologist.
Possibly a chemist.
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Term1/20
Where are chemicals found at work
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Definition1/20
In every area of work
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Term1/20
Which of the following is an example of how research into the effects of a chemical has changed how it is used
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Definition1/20
Finding out that asbestos is dangerous and limiting its use in
building materials
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Term1/20
Which of following might a biologist choose to study
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Definition1/20
The causes of honeybee deaths in beehives
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Term1/20
What best explains the type of characterization used in this passage
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Definition1/20
savage and war-hungry
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Term1/20
Which one of the following is an example of a strong base
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Definition1/20
sodium hydroxide
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Term1/20
which of the following is an example of an Arrhenius acid
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Definition1/20
HI
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Term1/20
( true or false ) All chemicals in the lab are to be considereddangerous
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Definition1/20
All chemicals in the lab are to be considered dangerous. ... Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
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Cards in this guide (20)
How do chemicals affect the environment
They can both help and hurt the environment. Some chemicals are
necessary such as water, minerals, and the air we breathe. The
exact effects depend on the exact chemicals. Some chemical waste
can harm plants, wildlife, or even humans. Some chemicals such as
phosphates can cause excessive red algae to grow in bodies of
water. Oil and petrochemicals in the water can kill birds and
fish.
What is the purpose of the scientific method
The purpose of the scientific method is to remove as much human bias and opinions from science.
What do biologists study
A biologist is a scientist devoted to and producing results in biology through the study of life. Typically biologists study organisms and their relationship to their environment. Biologists involved in basic research attempt to discover underlying mechanisms that govern how organisms work. Biologists involved in applied research attempt to develop or improve medical, industrial or agricultural processes.
What is the difference between a strong base and a weak base
A "strong" acid (or base) is one that dissociates completely in dilute aqueous solution. One which does not is a "weak" acid (or base). An acid with a pKa (or a base with a pKb) lower than about -2 is considered to be a "strong" acid.
Weak acids and bases can still be quite corrosive. HF is a "weak" acid with a pKa of around 3.2 (which corresponds to only about one molecule out of every 38 or so being dissociated), but it's pretty terrible stuff and will dissolve even glass.
Which of the following is a strong acid
HCI (Hydrochloric acid)
What kind of fraction has a value less than 1
1/2 is less than one.
What is the purpose of engineers
Engineers design new products that you buy. They design
everything from bridges to planes to computers.
Which sentence suggests the least amount of psychic distance
Katia was going to teach them a lesson they'd never forget.
No way, she thought, this is ridiculous.
How has the scientific community addressed the safety of chemicals
scientists test and continue to retest both new and old
chemicals even if they have been tested before
What ideas about the atom changed when new evidence is discovered
Atoms cannot be divided
How have chemists helped fight leukemia
Chemists have developed medicine to fight leukemia.
What is Ka for H2CO3 aq H aq HCO3 aq
Ka= [h+][HCO3-]/[H2CO3]
What kind of scientist would study the affects of acid rain on a marble statue
Geologist.
Possibly a chemist.
Where are chemicals found at work
In every area of work
Which of the following is an example of how research into the effects of a chemical has changed how it is used
Finding out that asbestos is dangerous and limiting its use in
building materials
Which of following might a biologist choose to study
The causes of honeybee deaths in beehives
What best explains the type of characterization used in this passage
savage and war-hungry
Which one of the following is an example of a strong base
sodium hydroxide
which of the following is an example of an Arrhenius acid
HI
( true or false ) All chemicals in the lab are to be considereddangerous
All chemicals in the lab are to be considered dangerous. ... Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
An engineering team is conducting a wind tunnel test to see if a new rocket will launch successfully. Which part of the engineering process is the team in
What do biologists study
What is the difference between a strong base and a weak base
Is national institute of engineering and solution is affiliated to aicte
An engineering team is conducting a wind tunnel test to see if a new rocket will launch successfully. Which part of the engineering process is the team in
Where is the energy source for a flashlight
When you mix two chemicals is it true that it bubbles