The original substance that changes is _______?
A. Reactants
B. Atom
C. Element
What is A. Reactants
100
The periodic table organizes all known elements by ______.
What is atomic number
100
A __________ is a combination of two or more substances in which chemical properties of that substance does not change.
What is mixture
100
Most elements in the periodic table are ________.
What is Metals?
100
Which equipment will best separate a mixture of sand and sugar?
A. Filter paper, water, beakers
B. Magnet and hydrochloric acid
C. Graduated cylinder and gram balance
What is A. Filter paper, water, and beakers
200
New substance that formed are called the ________?
What is product
200
What is the atomic number of helium?
A. 2
B. 10
C. 15
What is 2
200
A mixture in which one substance dissolves into another substance.
What is Solution
200
Between the nonmetals and metals in the periodic table are a group of elements called the ________.
What is Metalloid
200
_________ cannot be pounded into thin sheets and drawn into wires.
What is Nonmetals
300
When two or more substances chemically react they usually give off a _________?
A. Product
B. Chemical Reaction
C. Indication
What is indication
300
What is the atomic number of Sodium?
A. 12
B. 21
C. 11
What is 11
300
Solutions come in different _____?
A. Solution
B. Concentrations
C. Saturation
What is Concentrations
300
Nearly all nonmetals are grouped on the _______ side of the periodic table.
A. Right
B. Middle
C. Left
What is Right
300
The only metal that is not shiny is?
What is Mercury
400
Chemical reaction that produces heat is called ________?
What is exothermic
400
What is the chemical symbol of zinc?
What is Zn
400
When no more material can be dissolved in a solution, the solution has reached is _______ point.
What is saturation
400
Metals conduct heat and _______ well.
What is electricity
400
Is silicon a metal?
What is no
500
Chemical reaction that absorbs heat is called ________?
What is endothermic
500
What is the atomic number of Rubidium?
A. 38
B. 79
C. 56
D. 37
What is 37
500
What is one way you can seperate a substance from salt water?
A. Evaporating the water
B. Filter paper
C. Magnet
What is Evaporating the water
500
Nonmetals are poor conductors of _________ and ________.
What is Heat and Electricity
500
Metals that have dull surfaces are called _______?