Sixth Grade Science Mastery Check 1

  1. What is the smallest particle of an element?
A.)Compound
B.)Mixture
C.)Molecule
D.)Atom
  1. The chemical combination of two or more atoms in fixed amounts is called a ______.
A.)orbit
B.)mixture
C.)compound
D.)element
  1. Which material is classified as an element?
A.)Gold (Au)
B.)Salt (NaCl)
C.)Water (H2O)
D.)Ammonia (NH3)
  1. Which of the following is true about mixtures and compounds?
A.)All of these
B.)A mixture contains different substances that are not chemically combined with one another.
C.)A compound forms when different substances chemically combine to form a new substance.
D.)Mixtures and compounds are both made of two or more different substances.
  1. Which statement is true about solubility?

A)Polar solutes dissolve in nonpolar solvents.

B)Polar solutes dissolve in polar solvents.

C)Nonpolar solutes dissolve in polar solvents.

D)Polar solutes dissolve in polar and nonpolar solvents.

  1. Which of the following would you expect to change a liquid’s density?

A.)the viscocity of the liquid

B.)the surface area of the liquid

C.)the temperature of the liquid

D.)the container in which the liquid is located

  1. Four boxes of the same volume are each completely filled one of the following items: sand, marbles, paperclips, or dice. The order of boxes from least to greatest mass is as follows: paperclips, dice, marbles, and sand.

Which box has the greatest density?

A.)the box filled with paperclips

B.)the box filled with dice

C.)the box filled with marbles

D.)the box filled with sand

  1. The amount of a substance that can be dissolved in a given solvent is its ______.

A.)solubility

B.)liquidity

C.)polarity

D.)suitability

  1. Which of the following completes the sentence below?

The term boiling point refers to the change from ______.

A.)liquid to gas

B.)gas to liquid

C.)solid to liquid

D.)liquid to solid

  1. Density is a measurable property of matter. How can the density of a substance be determined?

A.)Measure the length, width, and height of the substance, then multiply these values together.

B.)Measure the mass and volume of the substance, then divide the volume by the mass.

C.)Measure the length and weight of the substance, then multiply the length by the weight.

D.)Measure the mass and volume of the substance, then divide the mass by the volume.

  1. All matter is made up of particles called ______.

A.)compounds

B.) Molecule s

C.) atoms

D.) mixtures

  1. Which is a substance made up of only one kind of atom?

A.)Mixture

B.)Solution

C.)Compound

D.)Element

  1. What is the smallest part of an element that still retains properties of that element?

A.)Compound

B.)Molecule

C.)Atom

D.)Mixture

  1. Water is a ______because it is formed from atoms of two elements.

A.)compound

B.)molecule

C.)atom

D.)mixture

  1. The smallest part of a compound that still is that compound is a ______.

A.)mixture

B.)nucleus

C.)orbital

D.)molecule

  1. Chemical energy is stored in food until it is eaten. The energy in food is an example of______.
A.)magnetic energy
B.)static energy
C.)potential energy
D.)kinetic energy
  1. Which of the following would have the most potential energy?
A.)a rock sitting on the edge of a cliff
B.)a ball rolling on a flat surface
C.)a rollercoaster that is at the bottom of a hill
D.)a car moving down a flat road at 60 mph
  1. Marcus is swinging. As he goes upward, Marcus is building up potential energy, or stored energy. As Marcus goes downward, the potential energy ______.

A.)becomes kinetic energy.
B.)stays exactly the same.
C.)increases with every few inches.
D.)becomes chemical energy.
  1. Which of the following objects has kinetic energy?
A.)a rock falling off a cliff
B.)a book laying on a table
C.)a shirt folded on a chair
D.)an apple sitting on a desk
  1. All moving objects have ______energy.
A.)chemical
B.)potential
C.)electrical
D.)kinetic
  1. Which of the following is the correct definition of chemical energy?
A.)energy of an object due to the random motion of its atoms and molecules
B.)energy stored in chemical bonds of molecules
C.)energy produced from the splitting of atoms
D.)energy resulting from the flow of charge particles, such as electrons or ions
  1. Between steps 4 and 5, the mechanical energy of the turbine is converted to...?

A.)transitional energy.
B.)heat energy.
C.)electrical energy.
D.)mechanical energy.
  1. Lucas plugs a lamp into the wall. The light bulb in the lamp turns on. What kind of energy transformation is this?
A.)Electrical energy is transformed into mechanical and heat energy.
B.)Electrical energy is transformed into light and heat energy.
C.)Light energy is transformed into electrical and mechanical energy.
D.)Light energy is transformed into mechanical and heat energy.
  1. A car slams on its brakes, producing friction between the tires and the road. The mechanical energy of the car is converted into which type of energy?
A.)nuclear
B.)chemical
C.)light
D.)heat
  1. Is nuclear energy a renewable resource?
A.)yes
B.)no
C.)1/2 of the time
D.)3/4 of the time
  1. Tamara pours hot tea into a cold mug. A few moments later, she picks up the mug, and it is now warm.

What is the main form of energy transfer involved in heating the mug?

A.)convection

B.)radiation

C.)conduction

D.)all of these

  1. Which of the following is a true statement about heat transfer?

A.)Heat ALWAYS flows from cooler objects to warmer objects.

B.)Heat ALWAYS flows from warmer objects to cooler objects.

C.)Heat NEVER travels in a similar pattern.

D.)Heat is NOT related to temperature differences

  1. Which types of heat transfer involve heat flow from hot objects to colder objects?

A.)convection, but not conduction or radiation

B.)convection, conduction, and radiation

C.)convection and conduction, but not radiation

D.)convection and radiation, but not conduction

  1. The light from the Sun heats a metal surface. This is an example of ______.

A.)convection.

B.)conduction.

C.)reflection.

D.)radiation.

  1. In which of the following methods of heat transfer is it necessary for the objects to be directly touching one another?

A.)conduction

B.)radiation

C.)convection

D.)all of these

31.. / In which of the following phases of matter do molecules have the highest amount of energy?
A) / Liquid
B) / Solid
C. / Gas
D. / Plasma
32. / Which of the following is true about plasma?
A) / It is a state of matter that is made of free electrons and ions.
B) / It is a state of matter where all of the atoms are very close together.
C) / It is a state of matter where atoms are very far apart and are moving very fast.
D) / It is a state of matter where particles are somewhat close together, but they are free to move and flow a little.
33. /
Looking at the chart provided, in which of the following phases will the molecules of a substance fill whatever size container they are placed in?
A)Liquid
B)Solid
C) Gas
D)Heated
34. / In which of the following phases of matter are molecules arranged in a matrix and close together?
A) / Light
B) / Liquid
C) / Solid
D) / Gas

35. Of gases, liquids, solids, and plasma what is the densest state of matter?

A) Liquids

B) Gases

C) Solids

D) Plasma