6th grade science benchmark 1 Flashcards
What’s a dependent variable
The variable that depends on the Independent Variable
What is an Independent Variable?
Something that the scientist changes
In this hypothesis what’s the Dependent variable?
If there were more plants in a room, then there would be more oxygen in the air.
The amount of oxygen
In the hypothesis the Iv is the number of
Sheep
What is a constant in an experiment?
Something that stays the same
What’s a qualitative observation
Words or sentences
What’s a quantitative observation
Numbers
When would you form a hypothesis in a science experiment?
In the second step
In science which measurement system do you use
Metric
What is the abbreviation for centimeters?
cm
What are the parts of an atom starting from the center?
protons and neutrons create the nucleus in the center, electrons circle the nucleus
What are the charges for the parts of an atom
Protons are positive electrons are negative and neutrons are neutral
What substance is Air?
Mixture
What are the element parts from top to bottom?
The atomic number, the chemical symbol, the element name, the atomic mass
The periodic table is arranged by
The atomic number
What substance is sugar water?
Mixture
What substance is helium gas?
Element
What substance is oxygen?
Element
What substance is nickel?
Element
What substance is oil in water?
Mixture
What substance is a soft drink ?
Mixture
What substance is salt (NaCl)?
Compound
What substance is water?
Compound
What substance is Dry Ice (solidCO2)?
Compound
What substance is glass(SiO2)?
Compound
What substance is copper?
Element
What is the abbreviation for Meters?
M
What is the abbreviation for milliliters?
ml
What is the abbreviation for millimeters?
mm
What is the abbreviation for grams?
g
What is the abbreviation for kilograms?
kg
What is an inference?
An educated guess
In this hypothesis
If there were more sheep on a farm, then more wolves would come to the area.
The independent variable is the number of what?
Sheep
Horizontal rows on the periodic table are called
Periods
Vertical columns on the periodic table are called
Groups
What do columns tell us
Valence electrons
What holds two elements together in a chemical compound
Chemical bond
What are two of the four gases the earths atmosphere is comprised of?
Oxygen nitrogen
What’s waters chemical formula
H20
What are 3 characteristics of elements?
Atomic number
Atomic mass
Chemical Symbol
What’s the difference between a chemical change and physical change
A physical change is when you change the apearence of an object and chemical is when you change the object completely
