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biology > chapter 2-1 > Flashcards

chapter 2-1 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

brain of the cell, the center

A

nucleus

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2
Q

negative charge, same number as the protons, floats around the nucleus

A

electron

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3
Q

pure substance that consists of 1 type of atom

A

element

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4
Q

elements that have different number of neutrons

A

isotope

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5
Q

2 or more elements that combine together to make a chemical compound– H2O, CO2

A

compound

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6
Q

TRANSFER one atom to another

A

iconic bond

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7
Q

atoms are being SHARED

A

covalent bond

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8
Q

the positive and negative charge atoms– when an element loses an electron and another gains an electron, thats how they’re formed

A

ion

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9
Q

the smallest unit of most compounds

A

molecule

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10
Q

when molecules are close together, a slight attraction can develop between the regions of the molecules

A

van der waals forces

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11
Q

protons

A

positive charge

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12
Q

neutrons

A

neutral charge

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13
Q

electrons

A

negative charge

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14
Q

study of chemistry begins with the basic unit of matter. the greek word ‘atomas’ which means unable to be cut

A

atoms

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15
Q

H

A

1
Hydrogen
1

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16
Q

He

A

2
helium
4

17
Q

Li

A

3
lithium
7

18
Q

Be

A

4
beryllium
9

19
Q

B

A

5
boron
11

20
Q

C

A

6
carbon
12

21
Q

n

A

7
nitrogen
14

22
Q

o

A

8
oxygen
16

23
Q

f

A

9
fluorine
19

24
Q

ne

A

10
neon
20

25
Q

na

A

11
sodium
23

26
Q

mg

A

12
magnesium
24

27
Q

al

A

13
aluminum
27

28
Q

si

A

14
silicon
28

29
Q

p

A

15
phosphorus
31

30
Q

s

A

16
sulfur
32

31
Q

cl

A

17
chlorine
35

32
Q

ar

A

18
argon
40

33
Q

k

A

19
potassium
39

34
Q

ca

A

20
calcium
40

biology (12 decks)

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