Quiz about Science New York

Question 1

Students conducted an experiment to determine if unknown liquids were acids or bases. What was the independent variable in this investigation?

Accepted Answer

Sample

Answer

Indicator

Answer

Color change

Answer

Identification

Question 2

Students placed steel wool in beakers of four different liquids in order of the most acidic to neutral. The students recorded their observations in the table. Which is the best conclusion in the table?

Accepted Answer

The more acidic the substance, the faster it reacts with wool.

Answer

The more acidic the substance, the faster the steel wool turns to a gas.

Answer

The less acidic the substance, the faster the steel wool becomes covered with air bubbles.

Answer

The less acidic the substance, the faster the steel wool changes color.

Question 3

Liquids can be described as having

Accepted Answer

definite volume but no shape

Answer

definite shape and volume

Answer

no definite shape or volume

Answer

particles in fixed positions

Question 4

The smallest particle of an element that has the properties of that element is a(n)

Accepted Answer

atom

Answer

ion

Answer

compound

Answer

nucleus

Question 5

Which of the following is a physical property?

Accepted Answer

How easily a substance conducts heat

Answer

How easily a substance reacts with another substance

Answer

How easily a substance corrodes

Answer

How easily a substance forms compounds

Question 6

What does the pH of drain cleaner (ph=14) indicate about the dangers of such a product?

Accepted Answer

It is a strong base

Answer

It is a strong acid

Answer

It is a weak acid

Answer

It is a weak base

Question 7

A substance that tastes sour, reacts with metals and carbonates, and turns blue litmus red is a(n)

Accepted Answer

acid

Answer

element

Answer

salt

Answer

base

Question 8

What does a neutralization reaction produce?

Accepted Answer

water and a salt

Answer

an acid

Answer

an acid and a base

Answer

carbonated water

Question 9

Which of the following is a description of a gas?

Accepted Answer

No definite shape or volume

Answer

Definite shape and volume

Answer

Definite volume but no shape

Answer

Particles in fixed positions

Question 10

The difference between organic and inorganic compounds is

Accepted Answer

organic compounds contain carbon

Answer

organic compounds do not contain carbon

Answer

organic compound and inorganic compounds both do not contain carbon

Answer

organic compound and inorganic compounds both contain carbon

Question 11

The density of known substances are in the table below.

Accepted Answer

Aluminum

Answer

Copper

Answer

Lead

Answer

Steel

Question 12

How is the modern model of an atom different from the Bohr atomic model?

Accepted Answer

The arrangements of the electrons are different.

Answer

The masses of the atomic particles are different.

Answer

The numbers of electrons are different.

Answer

The shapes of the nuclei are different.

Question 13

The shaded row in the table is called the __.

Accepted Answer

Period

Answer

Column

Answer

Family

Answer

Group

Question 14

Which of the following lists the elements in order from those having the least protons to those having the most protons in the atoms?

Accepted Answer

O, S, Se, Te

Answer

O, N, B, Li

Answer

Na, S, Al, Cl

Answer

Rb, K, Na, Li

Question 15

Which of the following elements has 16 protons?

Accepted Answer

Sulfur

Answer

Oxygen

Answer

Chlorine

Answer

Germanium

Question 16

Which of these elements has an atomic number of 14?

Accepted Answer

Si

Answer

N

Answer

Al

Answer

P

Question 17

Which of these cannot be separated into its parts by an ordinary chemical or physical process?

Accepted Answer

An atom of carbon (C)

Answer

A mixture of salts (NaCl, KI)

Answer

A compound of nitrogen (NH₃₎

Answer

An acid of chlorine (HCl)

Question 18

Dalton inferred that atoms of each element

Accepted Answer

have a unique mass

Answer

contain protons and neutrons

Answer

contain a nucleus

Answer

have the same mass

Question 19

The attraction between two oppositely charged ions is call a(n)

Accepted Answer

ionic bond

Answer

molecular attraction

Answer

double bond

Answer

covalent bond

Question 20

According to this equations, what happened to the carbon and oxygen?

Accepted Answer

They combined chemically to form a new compound.

Answer

They combined chemically to form carbon and oxygen.

Answer

They combined physically to form a new mixture.

Answer

They combined physically to form a new element.

Question 21

In an experiment combining vinegar and baking soda, gas is given off. In this chemical reaction, the vinegar and baking soda are

Accepted Answer

reactants

Answer

products

Answer

elements

Answer

suspensions

Question 22

If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occurred?

Accepted Answer

A physical change

Answer

A chemical change

Answer

A temperature change

Answer

A phase change

Question 23

Which of these is a change in chemical composition?

Accepted Answer

vinegar bubbles when baking soda is added

Answer

a lake freezes solid

Answer

gravel, sand, and water are mixed

Answer

a copper bar is rolled into a flat sheet

Question 24

Tearing paper is an example of a

Accepted Answer

physical change

Answer

chemical change

Answer

chemical reaction

Answer

solution

Question 25

Energy released by joining nuclei of atoms together is

Accepted Answer

nuclear fusion

Answer

nuclear fission

Answer

nuclear splitting

Answer

chain reactions

Question 26

Which of the following is an example of potential energy?

Accepted Answer

A glass jar sitting on a shelf

Answer

A flag waving in the wind

Answer

A ball rolling along a sidewalk

Answer

A battery powering a radio

Question 27

Which energy transformation occurs first in a coal-burning power plant?

Accepted Answer

Chemical energy to thermal energy

Answer

Thermal energy to mechanical energy

Answer

Thermal energy to electrical energy

Answer

Mechanical energy to electrical energy

Question 28

Which of these best describes the particle motion taking place as gas is exposed to freezing temperatures

Accepted Answer

The particles decrease in speed.

Answer

The particles move with more force.

Answer

The motion of the particles becomes random.

Answer

The motion of the particles is unchanged.

Question 29

A metal spoon was placed in a dish of ice cream and became cool. Which correctly describes the heat transfer process that resulted in the cooling of the spoon?

Accepted Answer

Conduction, because the spoon was in contact with the cold ice cream.

Answer

Convection, because the spoon was in contact with the cold ice cream.

Answer

Conduction, because cold air currents affected the temperature of the spoon.

Answer

Convection, because cold air currents affected the temperature of the spoon.

Question 30

Which of these properties of an unknown liquid can be found using a beaker, hot plate, and a temperature probe?

Accepted Answer

Boiling point

Answer

Density

Answer

Oxygen level

Answer

Chemical composition

Question 31

The volume of water in the pot decreases during this investigation. Water droplets form on the mirror when positioned over the pot. In this setup, water __.

Accepted Answer

Vaporizes and then condenses

Answer

Vaporizes and then freezes

Answer

Condenses and then vaporizes

Answer

Freezes and then vaporizes

Question 32

The location on the track where the train has the greatest potential energy is

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 33

An example of kinetic energy continuously being changed to potential energy and back again might be

Accepted Answer

a girl swinging on a swing

Answer

a train moving down a track

Answer

electric charges moving in a straight path

Answer

a plate sitting on the edge of a table

Question 34

Between points 4 and 5, energy is being used to change water from a

Accepted Answer

liquid to a gas

Answer

solid to a liquid

Answer

solid to a gas

Answer

liquid to a solid

Question 35

Which of these will cause water to change to ice?

Accepted Answer

Removing heat from water

Answer

Stirring the water

Answer

Adding salt to the water

Answer

Putting the water in the sunlight

Question 36

As the frequency of a wave decreases, the wave's __

Accepted Answer

wavelength increases

Answer

period decreases

Answer

amplitude increases

Answer

speed decreases

Question 37

Sound waves are unable to travel through __.

Accepted Answer

a vacuum

Answer

air

Answer

water

Answer

a rock

Question 38

During a fireworks show, a family sees the spray of sparkles from an exploding firework high in the sky and, a moment later, hears the pop. Which of these best explains why the pop and spray do not seem to occur at the same time?

Accepted Answer

Sound travels slower than light.

Answer

Light and sound travel through air.

Answer

Sound travels through a vacuum.

Answer

Light and sound travel at the same speed.

Question 39

The illustration shows a wave. The wave's wavelength is the distance between point ____.

Accepted Answer

2 and 4

Answer

1 and 2

Answer

1 and 4

Answer

2 and 3

Question 40

How is sound produced?

Accepted Answer

by making a material vibrate at a frequency that can be heard

Answer

by electromagnetic waves

Answer

by causing molecules in a solid to vibrate

Answer

by pushing on a material

Question 41

The maximum distance that particles of a medium carrying waves move away from their rest positions is the wave's

Accepted Answer

amplitude

Answer

frequency

Answer

pitch

Answer

wavelength

Question 42

The pitch of a sound that a person hears depends on the sound wave's

Accepted Answer

frequency

Answer

loudness

Answer

intensity

Answer

amplitude

Question 43

What occurs when vibrations traveling through an object match the object's natural frequency?

Accepted Answer

resonance

Answer

diffraction

Answer

reflection

Answer

refraction

Question 44

The bending of waves around the edge of a barrier is known as

Accepted Answer

diffraction

Answer

reflection

Answer

refraction

Answer

interference

Question 45

Which is the result of using a more powerful motor to run an elevator?

Accepted Answer

The same amount of work is done in less time.

Answer

Less work is done in the same amount of time.

Answer

The same amount of time is needed to move the same distance.

Answer

A longer time is needed to move a shorter distance.

Question 46

To complete a project, 200,000 Joules of work are needed. The time taken to complete the project is 20 seconds. How much power is needed?

P=w/t

Accepted Answer

10,000 J/s

Answer

0.0001 J/s

Answer

200,020 J/s

Answer

1,000,000 J/s

Question 47

A car manufacturer reduces the mass of a car by 250 kg. If the new design is otherwise identical to the old design, how will the new car compare to the old car?

Accepted Answer

It will need less force to move.

Answer

It will have a greater gravitational attraction to the road.

Answer

It will require more fuel to operate.

Answer

It will release more gas emissions.

Question 48

A wheel-and-axle is a lever that rotates around a fixed point. All of the following machines employ a wheel-and-axle except a

Accepted Answer

crowbar

Answer

bicycle

Answer

skateboard

Answer

pencil sharpener

Question 49

At what speed would a car have to move in order to travel 20 km in two hours?

Accepted Answer

10 km/hr

Answer

5 km/hr

Answer

20 km/hr

Answer

40 km/hr

Question 50

A girl jumps forward off a boat. According to Newton's third law of motion, what happens to the boat?

Accepted Answer

it moves backward

Answer

it also moves forward

Answer

it remains motionless

Answer

it sinks

Question 51

In which example is the least amount of work done?

Accepted Answer

lifting a 20 N box to a height of 1 m

Answer

lifting a 20 N box to a height of 2 m

Answer

using a force of 20 N to push a box 3 m

Answer

using a force of 10 N to push a box 6 m

Question 52

A student sets four balls rolling at the same speed. Ball 1 has a mass of 9 kg, ball 2 has a mass of 8 kg, ball 3 has a mass of 5 kg, and ball 4 has a mass of 3 kg. Which ball will hit the bowling pins with the most force?

Accepted Answer

Ball 1

Answer

Ball 2

Answer

Ball 3

Answer

Ball 4

Question 53

A student used a ruler to measure the distance a snail traveled along the sidewalk. What was the snail's average speed for these five minutes?

Accepted Answer

1.26 cm/min

Answer

0.31 cm/min

Answer

0.70 cm/min

Answer

0.76 cm/min

Question 54

When a moving car stops suddenly, the riders in the car continue to move forward because of

Accepted Answer

inertia

Answer

friction

Answer

gravity

Answer

centripetal force

Question 55

Which of the following is an example of static electricity?

Accepted Answer

A balloon sticks to a wall after it is rubbed with a piece of wool.

Answer

A dry-cell battery connected to wires lights up a light bulb.

Answer

A magnet sticks to a refrigerator door made of metal.

Answer

A light switch that is turned on runs a ceiling fan.

Question 56

Laundry in a clothes dryer often becomes charged with static electricity while drying. Which of these best explains why a clothes dryer often generates static electricity?

Accepted Answer

Electrons are transferred as clothes rub against each other in the dryer.

Answer

Short circuits in the dryer charge the laundry.

Answer

Clothes with metal pieces conduct electricity in the dryer.

Answer

Heat from the dryer charges the air and produces lightning.

Question 57

A group of campers travels to a cabin which has no electrical power. In order to provide the power for a heater and lights, which device would be appropriate?

Accepted Answer

A generator

Answer

A resistor

Answer

An insulator

Answer

A voltmeter

Question 58

What change will most likely increase the strength of a magnetic field produced by an electromagnet?

Accepted Answer

Add a battery

Answer

Reduce the number of turns of the coil

Answer

Switch the direction in which the battery is connected

Answer

Remove the iron nail

Question 59

In order to turn on the light, a piece of wire needs to be connected from

Accepted Answer

A to D

Answer

A to C

Answer

B to C

Answer

C to D

Question 60

Which of the following is shown in this diagram?

Accepted Answer

Parallel circuit

Answer

Alternating current

Answer

Short circuit

Answer

Series circuit

Question 61

Both light bulbs are lit in the circuit. In order to turn off both lights, select the location where a switch must be installed in the circuit.

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 62

An electric current produces a(n)

Accepted Answer

magnetic field

Answer

magnetic domain

Answer

electrical resistance

Answer

permanent magnet

Question 63

Which of the following convert mechanical energy into electrical energy?

Accepted Answer

generators

Answer

both generators and electric motors

Answer

electric motors

Answer

transformers

Question 64

The strength of an electromagnet will be increased if

Accepted Answer

a stronger ferromagnetic materials is used for the core

Answer

the current in the wire is decreased

Answer

the number of loops in the wire is decreased

Answer

the thickness of the insulation on the wire is increased

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