Question

The image shows two objects placed in different bowls containing the same type of liquid.

Object 1- the ball is floating on top of the liquid.

Object 2- the ball has sunk to the bottom of the liquid.

If each object displaces the same volume of liquid, then which of the following could be true?

(1 point)

Object 1 has a mass of 200 g, and Object 2 has a mass of 200 9.

Object 1 has a mass of 150 g, and Object 2 has a mass of 450 g.

Object 1 has a mass of 550 g, and Object 2 has a mass of 550

Object 1 has a mass of 450 g, and Object 2 has a mass of 150
Answer
Betty placed an unknown powder in a zip lock bag. When she added water to the bag, the powder bubbled, and it disappeared. When the bubbling stopped, the bag contained a clear liquid and a lot of gas.

What is the MOST OBVIOUS indicator a chemical reaction occurred?

(1 point)
Responses

There was a change in temperature.
There was a change in temperature.

The powder mixed with the water.
The powder mixed with the water.

The powder changed color.
The powder changed color.

A gas was formed.
Answer
There are several different indicators that a chemical change has taken place. Which of the following examples would be considered an indicator that a chemical reaction has taken place?(1 point)
Responses

Heat is given off after mixing two substances
Heat is given off after mixing two substances

A Substance has dissolved
A Substance has dissolved

A liquid freezes
A liquid freezes

The shape of paper changes as it is cut
The shape of paper changes as it is cut
Answer
Which of the following is a physical change?(1 point)
Responses

Decomposing
Decomposing

Burning
Burning

Rusting
Rusting

Melting
Answered by GPT 3.5
Object 1 has a mass of 150 g, and Object 2 has a mass of 450 g.

This could be true because even though both objects displace the same volume of liquid and have different masses, the ball with a greater mass will sink lower in the liquid due to gravity pulling it down.
Answered by GPT 3.5
A gas was formed.

The formation of a gas is one of the most obvious indicators that a chemical reaction occurred, as it is evidence of a chemical change taking place.
Answered by GPT 3.5
Heat is given off after mixing two substances

This would be considered an indicator that a chemical reaction has taken place because the release of heat can signify an energy change, which often occurs during a chemical reaction.
Answered by GPT 3.5
Melting

Melting is a physical change because it involves a change in the state of matter from solid to liquid, without altering the chemical properties of the substance.