Basic Chemistry Flashcards Preview

175.205 Brain and Behaviour > Basic Chemistry > Flashcards

Flashcards in Basic Chemistry Deck (19):
0

An ____ is the smallest piece of an element.

atom

1

A ____ is the smallest piece of a compound that maintains the properties of the compound.

molecule

2

An atom is composed of subatomic particles, including

protons, neutrons and electrons.

3

A proton has a ____ electrical charge.

positive

4

A neutron has a ____ charge.

neutral

5

An electron has a ____ electrical charge.

negative

6

The ____ of an atom - it's centre - contains one or more protons plus a number of neutrons.

nucleus

7

Electrons are found in the space ____ the nucleus.

around

8

The difference between one element and another is in the number of ____ in the nucleus.

protons

9

The number of protons is the ____ ____ of the element. In the periodic table it is recorded at the top of the square for each element.

atomic number

10

The number at the bottom is the elements ____ ____, which indicates the weight of an atom relative to the weight of one proton.

atomic weight

11

An atom that has gained or lost one or more electrons is called an ___.

ion

12

The attraction of positive ions for negative ions forms an ____ ____.

ionic bond

13

In some cases, instead of transferring an electron from one atom to another some pairs of atoms share electrons with each other, forming a ____ bond.

covalent

14

Living organisms depend on the enormously versatile compounds of carbon. Because of the importance of these compounds for life, the chemistry of carbon is known as ____ ____.

organic chemistry

15

____ are proteins that control the rate of chemical reactions.

Enzymes

16

Enzymes are a type of ____. A ____ is any chemical that facilitates a reaction among other chemicals without being altered itself in the process.

catalyst

17

The body relies on ATP (____ ____) as its main way of sending energy where it is needed.

adenosine triphosphate

18

Much of the energy derived from ____ goes into forming ATP molecules that eventually provide energy for the muscles and other body parts.

food

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