Which of the following are NOT chemical properties?
A. Shape
B. State of Matter
C. Flammability
D. Reactivity
E. pH
A and B
Is a milk homogeneous or heterogeneous?
Homogeneous.
Pull up whiteboard for question.
Atoms of an element.
Does the most dense or least dense substance go to the bottom?
Most
Which is in a fixed proportion:
1. Pure substances
2. Mixtures
Pure substances
If a solution has a pH of 3, would it be known as an acid or a base?
Acid
True or false: a solution scatters light.
False
Pull up white board for question.
Molecules of an element.
Order these from what would be on the bottom of a beaker vs the top if all solutions were put into the same beaker:
Substance A: 1.67 g/mL
Substance B: .68 g/mL
Substance C: .54 g/mL
A, B, C
Is pizza homogeneous or heterogeneous?
Heterogeneous
1. A phase change from a solid to a liquid is known as:
2. A phase change from a gas to a liquid is known as:
1. Melting
2. Condensation
Which of the following settles into layers?
A. Suspensions
B. Colloid
C. Solutions
A
Is H2O an element or a compound?
Compound
A block has a volume of 15cm3 and a mass of 18g. What is the density?
.83 g/cm3
Label the following as an element, compound, mixture, or none.
1. Dog
2. Carbon (C)
3. NaCl
4. Energy
1. Mixture
2. Element
3. Compound
4. None
Which statement about a solid is correct?
A. Has a fixed shape and volume.
B. Has a fixed shape but not volume.
C. Has a fixed volume but not shape.
A
Kool-aid is a mixture where you add cool-aid mix to water. Which is the solute and which is the solvent?
Kool-aid mix = solute
Water = solvent
Is ‘C’ an element or a compound?
Element
A solution has a density of 2.36g/mL and a volume of 20mL. What is the mass of the solution?
47.2g
Pick two to answer:
What is the definition of Malleable?
What is the definition of Odor?
What is the definition of conductivity?
1. Can be pounded into a sheet.
2. Has a smell.
3. The ability to transfer heat or electricity.
Which of the following statements are NOT correct about a liquid?
A. It had a fixed volume but not shape.
B. Particles are closely packed.
C. Strong attraction towards its particles.
B and C
Give two examples of heterogeneous mixtures.
Answers Vary
What are the two types of pure substances?
Element and Compound
If billy were to drop a ball that has a density of 1.36 g/cm3 into water, would it sink or float?
Sink.
Pull up whiteboard for question.
A. Freezing
B. Melting
C. Vaporizing/Boiling
D. Condenses