Physical Science Part 1

Physical Science Part 1

Multiple Choice

• color

• mass

• shape

• volume

Multiple Choice

Which of the following processes causes dew to form in the morning?

• condensation

• evaporation

• transpiration

• precipitation

Multiple Choice

• freezing

• condensation

• melting

• evaporation

Multiple Choice

• magnet

• balance (scale)

• funnel (large opening goes to smaller opening)

• hot plate (1 stove burner)

Multiple Choice

Marie put a 4 centimeter (cm) square block of foam in a bucket of water and it floated. Why did it float?

• The foam is less dense than the water.

• The foam has air bubbles which make it float

• The foam is smaller than the bucket of water

• The foam weighs less than all the water in the bucket

Multiple Choice

Rafael broke a small twig off a tree and threw it in the lake. It floated away. If he could somehow push the whole tree into the lake and it floated, which of the following would explain why it floats?

• The temperature of the tree is less than the temperature of the water

• The volume of the tree is less than the volume of the water

• The mass of the tree is less than the mass of the water

• The density of the tree is less than the density of the water

Multiple Choice

If one liter of water will boil at 100 degrees Celsius (°C), at what temperature will 2 liters of water boil?

• 10°C

• 50°C

• A.100°C

• A.200°C

Multiple Choice

Sam is trying to convince Alan that a substance that conducts heat does not necessarily conduct electricity as well. Which of the following would be the best example for him to use to convince Alan of this?

• a piece of glass

• a piece of copper wire

• a steel nail

• a paper clip

Multiple Choice

Water can occur as liquid water, water vapor, or ice. The water molecules move at different speeds when they are in each state. Which of the following best describes the relative speeds at which the molecules move in each state?

• water vapor - slowest, liquid water - intermediate, ice - fastest

• liquid water - slowest, ice - intermediate, water vapor - fastest

• ice - slowest, liquid water - intermediate, water vapor - fastest

• ice - slowest, water vapor - intermediate, liquid water - fastest

Multiple Choice

Which of the following statements best describes the basic structure of an atom?

• Electrons and protons are in motion around a nucleus that contains neutrons

• Neutrons are in motion around a nucleus that contains protons and electrons

• Protons are in motion around a nucleus that contains electrons and neutrons

• Electrons are in motion around a nucleus that contains protons and neutrons

Multiple Choice

Which of the following comparisons correctly describes subatomic particles?

• an electron has a negative charge and a mass larger than a proton

• a neutron has a negative charge and a mass smaller than a proton

• a neutron has a neutral charge and a mass larger than an electron

• a proton has a positive charge and a mass smaller than an electron

Multiple Choice

Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table. Why are these elements in the same column in the periodic table?

• They have similar properties

• They have atoms of the same size

• They have the same number of protons

• They have the same number of neutrons

Multiple Choice

• O, Oxygen

• Cl, Chlorine

• S, Sulfer

• Cu, Copper

Multiple Choice

The periodic table of the elements groups elements into columns based on multiple things including its reactivity with other elements. Which element is located in a column that contains elements that do NOT react with other elements?

• B, Boron

• Ne, Neon

• Si, Silicon

• C, Carbon

Multiple Choice

• freeze at room temperature

• react with other gases in the air

• unlikely to combine with other elements

• solidify at standard pressure and temperature

Multiple Choice

In which region on the periodic table would non-metals be found?

• 1

• 2

• 3

• 4

Multiple Choice

Matthew has six cubes of different materials. Each cube has a mass of 10 grams (g). Matthew sorts the cubes into two groups using one physical property.

Which physical property did Matthew most likely use to sort the cubes into two groups?

• density

• magnetism

• melting point

• electrical conductivity

Multiple Choice

Water has the chemical formula H₂O. How do the properties of hydrogen (H) and oxygen (O) change when they come together to form water?

• They will no longer burn when they are part of a water molecule

• They both can become a gas once they combine to form a water molecule

• They gain the ability to become a liquid when they form a water molecule

• They will both lose electrons when they become part of a water molecule

Multiple Choice

Squirrels eat acorns for energy and to grow and repair tissues. How is an acorn used to build squirrel muscle?

• The elements in the acorn can be rearranged to make the molecules the squirrel's body needs

• The energy from the acorn warms any damaged muscle and allows it to repair itself and heal

• The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells

• Once the acorn has been digested by the squirrel, the carbohydrates are converted to muscle tissue

Multiple Choice

Which of the following is the best example of a heterogeneous mixture?

• Lemonade made of water, lemonade powder mix, and sugar

• An omelet made of scrambled eggs and cheddar cheese

• Trail mix made of raisins(yuck), peanuts, and chocolate candies (best part)

• A glass of ice water made of ice cubes and pure water

Multiple Choice

Martin is making salad dressing by combining vinegar and oil, which he has to shake each time before he pours it. What word best describes the salad dressing?

• compound

• element

• mixture

• solution

Multiple Choice

Martin is making salad dressing by combining vinegar and oil, which he has to shake each time before he pours it. What word best describes the salad dressing?

• compound

• element

• mixture

• solution

Multiple Choice

• very acidic

• very basic

• positively charged

• negatively charged

Multiple Choice

Harriet is looking through the kitchen cabinet, trying to find something with a low pH to use in removing some calcium deposits on the kitchen sink. Which of the following things has the lowest pH and therefore would be best for her to use?

• baking soda

• bleach

• vinegar

• water

Multiple Choice

Andy stirred 100 grams of salt (sodium chloride, NaCl) into a pot of water until he could no longer see any grains of salt. If he allows all the liquid to evaporate, how much salt will he find in the pot?

• 0 g

• 50 g

• 100 g

• 200 g

Multiple Choice

What is the main advantage of using a warm solution instead of a cold solution in a chemical reaction?

• less fluid volume

• reduced reaction time

• fewer particles involved

• more comfortable temperature

Multiple Choice

Hilary put some ice cubes in a glass of water, and the ice cubes melted. What is the best evidence she can use to show that the melting of the ice is a purely physical change and not a chemical change?

• Even though the ice and the liquid water look different, they can be shown to be made of the same molecules

• When liquid water is put into the freezer and cooled long enough, it will change into a solid form

• She did not need to add any extra heat in order to get the ice to melt in the glass of water

• Although ice is more difficult to see through than liquid water, it does not change color when it melts

Multiple Choice

Charlotte poured some baking soda into a model volcano filled with vinegar. It frothed and bubbled and fizzed, but when it finally stopped, the liquid in the model looked just like vinegar. What is the best question for her to ask in order to determine if a chemical change occurred?

• Did a gas form?

• Did a solid disappear?

• Did different molecules form?

• Did any of the atoms disappear?

Multiple Choice

Brian's family has a compost pile at home. They put all the weeds they pull up from the garden in it as well as any vegetable waste they gather from the kitchen. If they keep it moist, all this vegetation will eventually turn into organic soil by the chemical process of decay. Since decay involves a variety of chemical reactions, how might temperature affect the rate at which the compost turns into soil?

• Temperatures near freezing would make it speed up

• It would happen faster at warmer air temperatures

• Changing temperatures would not affect the chemical reactions

• Warm summer air temperatures would make it slow down

Multiple Choice

Which action will result in a product with new chemical properties?

• shredding a newspaper

• breaking a mirror

• cutting wood

• popping popcorn

Multiple Choice

Jorge ran a electrical current through a beaker of distilled water and separated water into the gases H2 and O2.

What type of change did he produce?

• periodic change

• elemental change

• chemical change

• physical change

Multiple Choice

When a candle is lit, the wick burns, the wax melts, the candle changes shape, and the air around the candle heats up. Which of the following is an example of a chemical change?

• the wick burning

• the wax melting

• the candle changing shape

• the air around the candle heating up

Multiple Choice

• 62.5 g

• 112.5 g

• 250 g

• 387.5 g