Answers AISD-SCI-TX- 6th grade - 1st six weeks CR _ Summer 20261.2 Chemical Changes

Unit Test Answers

3 verified answers

Free Preview

Which statement gives two characteristics of all liquids?

They spread out to fill space and have atoms that vibrate in place.

They have atoms that vibrate in place and have a definite shape.

They will change shape to fit a container and have definite volume.

They have definite volume and have atoms that move freely in all directions.

Free Preview

Which object would sink in honey, which has a density of 1.4 g/cm³?

Object 1 (0.9 g/cm³)

Object 2 (1.2g /cm³)

Object 3 (0.2 g/cm³)

Object 4 (2.3 g/cm³)

Which state(s) of matter have no definite shape or volume?

liquids and solids

liquids and gasses

gasses

solids

An amount of nitrogen undergoes a physical change and increases its volume. What can be known about this physical change?

The boiling point of the nitrogen increased.

The mass of nitrogen increased.

The color changed.

The density changed.

Which property of physical changes explains why matter is conserved in a physical change?

The arrangements of particles do not change, and the bonds between atoms do not break.

Mass, not energy, changes in a physical change.

Energy and mass change in a physical change.

The bonds between atoms do not break; it is only the arrangement that changes.

What occurs in a chemical reaction?

Chemical changes are reversed.

Substances are melted.

Atoms are rearranged.

Physical changes are reversed.

Which ranks these materials by the attraction between their atoms from the weakest to the strongest?

oxygen gas, liquid water, liquid honey, solid iron ore

liquid water, liquid honey, oxygen gas, solid iron ore

solid iron ore, liquid honey, liquid water, oxygen gas

oxygen gas, liquid honey, liquid water, solid iron ore

What is the ability to rust is an example of?

combustibility.

reactivity.

melting point.

boiling point.

What is conserved in physical changes?

shape

energy

mass

density

What has occurred when a solid forms out of the mixing of two liquids in a chemical reaction?

melting

gas formation

combustion

precipitate formation

Four students are analyzing four different substances and recording their findings in this table.Which most describes this table?

Leonna has a solid, Xiao and Blake have liquids, and Amir has a gas.

Leonna and Amir have gasses, Xiao has a liquid, and Blake has a solid.

Leonna has a solid, Xiao has a liquid, Blake has a gas, and Amir made a mistake.

Leonna has a solid, Xiao has a liquid, Blake made a mistake, and Amir has a gas.

If a person has the values for an object’s density and volume, what value can be calculated?

the object’s size

the object’s mass

the shape the object forms in a container

the amount of space the object takes up

Chanel has some cotton candy that came in a cloudy shape. She wants to make it more dense. Which describes the candy before and after Chanel manipulated it?

The candy before was a cube, and the candy after was a ball.

The candy before was compacted, and the candy after was fluffy.

The candy before was fluffy, and the candy after was compacted.

The candy before was a ball, and the candy after was a cube.

What happens to the total mass of a substance undergoing a physical change?

It stays the same.

It doubles.

It triples.

It is reduced.

Which tools would Sara use to find an irregularly shaped object’s mass and volume?

a meter stick, a ruler, and water

a meter stick, a balance, and water

a balance, water, and a ruler

a balance, water, and a beaker

Did you find these answers helpful?

Unit Test Answers

More from this Course

TRY EDGENUITY HACKS