Get Biology Final Exam Help Before Tuesday

[Biology_Help]

Im not sure how to use the above posts but please post back if it is okay for me to post my study guide so that yall can please help me i have it typed and my bio teacher said that he was not going over the correct answeres so i need youe help cause i really needto pass this test. i have a few of them answered and have tryed to find many but i need some help my Exam is tuesday so if i could get help before then that would be great.

 

[cristo]

Post the questions, and give as many answers/thoughts you've have about particular ways of answering the questions. We can try and tell you where you've gone wrong (if at all) and give hints for questions you're completely stuck on.

 

[Biology_Help]

ok thanx.
1) What are the stages of the scientific method? 1.Observe 2. Make a hypothesis 3. Collect Data 4. Publish Results 5. Form a theory 6. Develop a new hypothesis 7. Revise theory
2) What occurs during each stage of the scientific method?Couldn't find an answer for this one
3) What are the important safety rules for the science classrooms? Always follow directions, and wear safety equipment
4) What is the standard unit of measure in science called? SI units
5) What are the standard units for Length, Weight, Mass, Area, Volume, Density, Time, and Temperature? Length- Meters...Weight-Pounds...and those are the only units for that I've found so far
ill let you read over these before i post the other ones cause i sort of have a lot more to go if that's ok

 

[Biology_Help]

6) How do scientists communicate? No Answer
7) What are reports, graphs, models, theories, and laws? No Answer
8) Differentiate between a theory and a law? A Law is something proven to be true, a theory is a given thought expressed by a person, believed to be true.
9) What tools are used to measure in the SI system? No Answer
10) What is an atom? Is the smallest particle of an element that has the characteristics of that element
11) What makes up an atom? The center of the atom (nucleus), nuclei contain positively chraged protons (P+), most contain nuetrons, have no charge (N*), then the region of space surrounding the nucleus contains negatively charged electrons (N-)
12) What are elements? Substances that can't be broken down into smaller substances.

 

[cristo]

ok thanx.
1) What are the stages of the scientific method? 1.Observe 2. Make a hypothesis 3. Collect Data 4. Publish Results 5. Form a theory 6. Develop a new hypothesis 7. Revise theory

sounds fine to me.

2) What occurs during each stage of the scientific method?Couldn't find an answer for this one

I'd say this was pretty self explanatory (if I'm reading the question correctly) for example, what happens in the "observation" stage

3) What are the important safety rules for the science classrooms? Always follow directions, and wear safety equipment

sounds good

4) What is the standard unit of measure in science called? SI units

correct

5) What are the standard units for Length, Weight, Mass, Area, Volume, Density, Time, and Temperature? Length- Meters...Weight-Pounds...

length is correct. pounds are a unit of mass, not weight (however, pounds are not the SI unit of mass!) I'll tell you that the SI unit of mass is kilogram.
For area: the units of area will be the units of length x length.. can you take a guess? Similar technique for volume. I'll leave the rest for you to find (time should be easy.. what units do you use to measure time in the lab?)

and those are the only units for that I've found so far
ill let you read over these before i post the other ones cause i sort of have a lot more to go if that's ok

That's fine, as long as you've made an attempt at them!

 

[cristo]

6) How do scientists communicate? No Answer

Not sure what the question wants as the answer here!

7) What are reports, graphs, models, theories, and laws? No Answer

Come on, you can have a go at this surely!

8) Differentiate between a theory and a law? A Law is something proven to be true, a theory is a given thought expressed by a person, believed to be true.

That sounds good

9) What tools are used to measure in the SI system? No Answer

Again, the question is a bit ambiguous here, so I'm not sure what the answer is. Standard SI apparatus, maybe? (that's a guess!)

10) What is an atom? Is the smallest particle of an element that has the characteristics of that element

correct

11) What makes up an atom? The center of the atom (nucleus), nuclei contain positively chraged protons (P+), most contain nuetrons, have no charge (N*), then the region of space surrounding the nucleus contains negatively charged electrons (N-)

All nuclei contain neutrons. Also, I'd use N for a neutron, and e- for an electron, otherwise, that's correct

12) What are elements? Substances that can't be broken down into smaller substances.

correct

 

[Biology_Help]

13) Differentiate between protons, neutrons, and electrons. Protons-are positively charged, Electrons- are negatively charged, and Neutrons- have no charge
14) What are the different types of electrons? (hint orbitals) that's how its writin but i can't find anything but this about it...Hydrogen Atom- has one electron Oxygen Atom- has 8 electrons
15) What is an atomic mass? No Answer
16) What are compounds? Its a substance that is composed of atoms of two or more different elements that are chemically combined.
17) Differentiate between molecules and atoms. MOLECULE- is a group of atoms held together by covalent bonds.
ATOM- Smallest part of an element, atoms are much smaller that moleculs
18) What are ions? Charged particles made of atoms
19) What are ionic and covalent bonds? IONIC- the attractive force between 2 ions at opposite charge COVALENT- when 2 atoms share electrons, such as 2 hydrogen atoms shareing electrons, the force between holds them together
20) What are the states of matter? No Answer

 

[cristo]

#13 is fine, but consider masses as well. This will enable you to answer #15. For #18, be more specific, for example how do atoms become charged when they form ions? For#20, think of the different types of matter you've come across- they will fit into three categories (eg, what state is water?)

 

[Biology_Help]

ok thank you i have to go but i will be back tomorrow after i answer more...thanx

 

[ibo]

Don't forget the 4th state of matter, plasma - the most abundant substance in the universe.