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Science > CHAPTER 7 Review > Flashcards

CHAPTER 7 Review Flashcards

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1
Q

Be able to label the parts of an atom

A

electron, proton, neutron, nucleus

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2
Q

Compounds are molecules, but molecules are _______ _______ compounds.

A

not always

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3
Q

__________ bonding occurs when atoms share electrons.

A

Covalent

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4
Q

An ________ is the smallest piece of an element that can be recognized as that element.

A

atom

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5
Q

An ion is an atom that has ________ or ________ electrons.

A

gained / lost

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6
Q

Acids that dissolve in water are called _______.

A

hydrogen ions

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7
Q

Elements that possess similar characteristics and react similarly with other elements are grouped in _________.

A

categories

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8
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. Formed when an acid ddd a base neutralize each other

A

salt

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9
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. slippery to touch

A

base

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10
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. sour taste

A

acid

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11
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. helps digest food in the stomach

A

acid

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12
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. usually composed of a metal and a nonmetal

A

salt

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13
Q

IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. bitter taste

A

base

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14
Q

What are molecules formed from two or more different elements called?

A

compounds

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15
Q

The atomic number is based on the number of ______ and element has.

A

protons

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16
Q

The horizontal rows on the periodic table of elements are called ___________.

A

periods

17
Q

Which scientist developed the periodic table of elements?

A

Mendeleev

18
Q

The atomic mass is the approximate number of ________.

A

Protons and neutrons

19
Q

Substances containing only one kind of atom are called __________.

A

elements

20
Q

Which scientist developed a simplified model of an atom?

A

Bohr

21
Q

A substance that changes color when exposed to acid or base solutions is called what?

A

indicator

22
Q

How many atoms of carbon are in H2CO3?

A

One

23
Q

Strong acids that can burn the skin are…

A

corrosive

24
Q

Be able to label the periodic cell

A

know atomic mass, atomic number, chemical symbol, element name

25
Q

If the element copper has 29 protons, how many electrons does it have? how do you know that?

A

29 electrons - because in a normal atom there are the same number of electrons as protons

26
Q

The study of matter is called…

A

chemistry

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