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Chemistry

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Pablo Friesen

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โˆ™ 2021-10-28 18:34:18
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Cards in this guide (25)
A example of a chemical change

a example of chemical change is fireworks

What happens when an atom gains an electron

It becomes a negative ion.

Why are some people fat and others are not

One reason people are fat is because they eat and eat and eat and don't exercise. Another reason is because some people have fast working calorie burning systems and some people have slow ones causing them to be fat.

It might be that those people that are not fat have high metabolism you eat as much as you want and not get fat.

Is it true that the atmosphere is mostly oxygen

No, mainly nitrogen

Which of the following is an organic molecule

Glucose

CH4 for bio sem 1

Sucrose

Fructose
CH4

{Apex Asnwers} C2H6

The goal of basic science is

to teach you basic fundimentals of biology

Why is the chlorine ion attracted to a sodium ion

the Chlorine ion is attracted to the Sodium ion because chlorine ion is negative and the sodium ion is positive. positive and negative ions are always attracted. hence the two are attracted.

What is the term for anything that takes up space and has mass

Anything that takes up space and has mass is called matter.

What is the purpose of adding an indicator to an unknown solution

Indicators contain chemicals that will react with certain substances. If that substance is present in your unknown solution, a reaction will occur. If no reaction occurs, then that substance is not present in your solution

Which shows that the results of an experiment are reliable

The experiment can be repeated with the same results

What do a dinosaur and a tree have in common

They bothe shared the same matter!

Which macromolecules have a basic unit that is composed of phosphate a sugar ring and one of five different bases

lipids

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid

Unsaturated fatty acids have double carbon bonds.

What type of bond do water molecules form with each other

Hydrogen Bond

Which question can be answered by science

how much pesticide is safe to use on plants

what is the effect of pesticides on the environment

how much energy does it take to make a paper bag

Which would prevent a plant from growing

Lack of sunlight

Which produces an ionic bond

Creating an electrostatic attraction produces an ionic bond.

Which activity would be within the field of biology

Figuring out how pesticides affect plant growth is within the field of biology.

What molecule makes the trunk of a tree sturdy

Cellulose makes the trunk of a tree sturdy.

What are the reactants in this chemical reaction Sodium metal reacts with hydrochloric acid to produce salt and hydrogen gas

The reactants in this reaction are sodium (Na) and hydrochloric acid (HCl).

Which symbol below represent the ions found in a glass of water

OH- and H+

The complicated molecules that make up living things usually contain carbon. Why is carbon so important in these molecules

carbon can form four strong covalent bonds

There are five different types of nucleotide bases found in living things. Which is an accurate comparison of the bases found in birds as opposed to the bases found in flowers

birds have a different arrangement of the bases than flowers

Which atoms form an ionic bond

Magnesium and bromine (Apex)

Which is not an example of matter and energy cycling through living things

helping hand

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