It HAS to be Science!
What is an observation?
Gathering information.
What is the SI unit for length?
Meters.
What is a substance?
Matter with uniform and unchanging composition.
What is a mixture?
A combination of two or more substances, but no chemical change occurs.
Is color a physical or chemical property?
Physical property.
What is qualitative data?
Observations that can be described in words. Non-numerical data.
How many microliters are in a liter?
1,000,000
Define liquid in terms of its shape, volume, and particle movement.
No definite shape, but definite volume. Particles are far enough apart to move past each other.
Is coffee a heterogeneous or homogeneous mixture?
Homogeneous mixture.
Is burning toast a physical or chemical change?
Chemical change.
What is the scientific method?
A systematic approach to scientific inquiry.
What is the formula for density, and what are the units?
mass/volume, g/mL
What is the Law of Conservation of Mass?
Mass can never be created or destroyed.
Is potato salad a heterogeneous or a homogeneous mixture?
Heterogeneous mixture.
Is boiling acid a physical or chemical change?
Physical change.
What is the independent variable?
The variable that the scientist controls.
Estimate one place past what you can physically measure.
Define solid in terms of shape, volume, and particle movement.
Definite shape and volume, particles are packed very tightly.
What is another name for a homogeneous mixture?
A solution.
Is volume an intensive or extensive property?
Extensive property.
What is a conclusion in science?
A judgement based on the information obtained.
Why do significant figures matter?
They indicate how precise a measurement is.
What is the difference between a gas and a vapor?
Gases exist in the gas phase at room temperature, while vapors are the gas phase of substances that exist as liquids at room temperature.
What separation technique would you use to separate pulp from orange juice?
Filtration.
Is density an intensive or extensive property?
Intensive property.