Grade 8 Unit 2 Science Reviewer | Baamboozle - Baamboozle

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A pure substance that is made from one type of atom is a(n) ______________ .

element

Bonds between atoms in a molecule form as a result of the sharing of?

electrons

Elements in the same group have __________ similar a. properties b. similar mass

a. properties

Diamonds ( C) and Gold ( Au) are examples of ______________

elements

The first energy shell can hold ______ electrons.

2

the capacity of metals to be drawn into wire. It begins with letter d

ductility

True or false: All elements in the same row have the same number of shells.

True

the temperature at which a solid turns to liquid

Melting point

C3H8 is an/ a element, compound or mixture.

compound

What are the basic building blocks for all matter?

atoms

H2O2← ? This number tells the number of atoms present. Subscript or superscript

subscript

The smallest particle of any element that still has the properties of that element is called

Atom

Classify Phosphorus (P) as an element or compound.

element

The air is a/ an element, compound, mixture.

mixture

the tendency of a substance to undergo a chemical reaction. It begins with letter R

reactivity

Rows on the periodic table are called ___________.

period

Valence means......inside, outside or full

outside

Glucose (C6H12O6) contains atoms of carbon, hydrogen, and oxygen that are chemically bonded together. What type of matter is glucose?

compound

in H2O , how many oxygen are present?

1

True or False: Water is an element.

false

What does the atomic number tell you? # of protons or # neutrons

# of protons

the ability to let heat or electricity pass through a material. It begins with letter C

conductivity

the temperature at which a liquid vaporizes

boiling point

Elements in the same group or column have the same .a. # of valence electrons b. # of protons c. # of shells

a. # of valence electrons

True or false: Most non-metals are gas in room temperature

TRUE