Chp 2 Matter practice test

____ is the amount of matter in an object.

• Mass

• Volume

• Weight

• Density

Answer explanation

Mass is defined as the amount of matter in an object, making it the correct choice. Volume measures space, weight is the force of gravity on mass, and density is mass per unit volume.

One unit to measure mass is

• g/mL

• grams (g)

• milliliters (mL)

• Centimeters (cm)

Answer explanation

The correct unit to measure mass is grams (g). g/mL measures density, mL measures volume, and centimeters (cm) measures length, making grams the only appropriate choice for mass.

____ is the amount of space an object takes up.

• Mass

• Volume

• Weight

• Density

Answer explanation

Volume is defined as the amount of space an object occupies. Unlike mass, which measures the amount of matter, or weight, which measures the force of gravity on an object, volume specifically refers to spatial extent.

One unit to measure volume is

• g/mL

• grams (g)

• milliliters (mL)

• Centimeters (cm)

Answer explanation

The correct unit to measure volume is milliliters (mL). Other options like grams (g) measure mass, while centimeters (cm) measure length. g/mL is a density unit, not a direct volume measurement.

One tool to measure volume is:

• Graduated Cylinder

• Thermometer

• Triple Beam Balance

Answer explanation

A graduated cylinder is specifically designed to measure the volume of liquids accurately, making it the correct choice. A thermometer measures temperature, and a triple beam balance measures mass.

What is a type of mixture is NOT evenly mixed and different parts can easily be seen (Ex. Vegetable soup)?

• Heterogeneous mixture

• Homogeneous mixture

• Solution

• Colloid

Answer explanation

A heterogeneous mixture is one where the components are not evenly mixed, allowing different parts to be easily seen, like in vegetable soup. In contrast, homogeneous mixtures have a uniform composition.

This picture represents: 

• Element

• Compound

• Mixture of Elements

• Mixture of Compounds

Answer explanation

The picture represents a compound because it consists of two or more elements chemically bonded together, forming a substance with distinct properties, unlike mixtures which retain individual properties of their components.

Tags

NGSS.MS-PS1-1

This picture best represents which of the following?

• element

• compound

• Homogeneous mixture

• Heterogeneous mixture

Answer explanation

A homogeneous mixture has a uniform composition throughout, meaning its components are evenly distributed. The picture likely shows such a mixture, distinguishing it from heterogeneous mixtures, which have visibly different parts.

Tags

NGSS.MS-PS1-1

If you change a substance into a new substance with new and different properties than the starting substances.

• Partial Change

• Physical Change

• Chemical Change

• Freezing

Answer explanation

A chemical change occurs when a substance transforms into a new substance with different properties, unlike physical changes which do not alter the substance's chemical identity. Therefore, the correct answer is Chemical Change.

Tags

NGSS.MS-PS1-2

Changing the phase, size or shape of something....

• Chemical change

• Physical Change

• Suspension

• Colloid

Answer explanation

Changing the phase, size, or shape of something is a Physical Change. Unlike a Chemical Change, which alters the substance's composition, a Physical Change only affects its form without changing its chemical identity.

Tags

NGSS.MS-PS1-4