Go to the Quizzes Page Matter and its Properties 0% 6 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 Evidence of a chemical reactions is anything that shows - a solid dissolved in a liquid a change in the state of matter a new substance has formed interaction between 2 gases 2 / 20 Consider a solid and liquid object having the same volume. Why a solid object has a greater density than a liquid object? because the solid has a fixed volume because the particles of a solid are closely packed in a smaller space because the particles of a liquid are closely packed in a smaller space because the liquid can flow 3 / 20 This substance can be separated by physical means Pure Substances Compounds Mixtures Elements 4 / 20 Dissolving salt is a ............... Production of new substances Flammability Chemical change Physical change 5 / 20 Which of the following is the best description of the results of a chemical reaction? The substance changes from liquid to solid at a low temperature The substance seems to disappear after dissolving in water The reaction can be reversed to get back the original substance A new substance with different properties is formed 6 / 20 Which of the following statements is true? Cutting paper is an example of a chemical reaction because a new substance is formed and the process cannot be undone Melting ice is an example of a chemical reaction because a new substance is formed and the process cannot be undone Freezing water is an example of a chemical reaction because a new substance is formed and the process cannot be undone Burning paper is an example of a chemical reaction because a new substance is formed and the process cannot be undone 7 / 20 Examples of Physical Changes Evaporating Freezing Burning Grinding 8 / 20 What is the volume of the stone? V stone = 100 mL + 80 mL = 180 mL V stone = 100 mL − 80 mL = 20 mL V stone = 80 mL / 20 mL = 4 V stone = 20 mL / 80 mL = 0 . 25 9 / 20 Rust forming on a piece of iron is an example of which of the following: The natural process of decay as metallic ions age A violation of the laws of physics because new mass has been created A chemical change because oxygen atoms from the atmosphere bonded with the iron atoms A physical change because the process can be reversed 10 / 20 Examples of Chemical Changes Evaporating Rusting Combustion Burning 11 / 20 Which statements are TRUE about mass? is the amount of matter in an object is a chemical property is a physical property is how much space an object takes up 12 / 20 A material whose particle composition allows heat & electricity to pass through it easily are described as having a high ___________. Weight Conductivity Density Hardness 13 / 20 The displacement method is followed to determine the ................ of a solid that has an irregular shape. mass density shape volume 14 / 20 Combining substances to form new substances is called .............. Exothermic reaction Physical reaction Endothermic reaction Chemical reaction 15 / 20 Maha was given a shiny golden ring as a gift for her graduation. Maha was confused about whether the ring was made of gold or plated gold. Which practical method can be followed to determine the nature of the ring without deforming it? Measure the volume of the ring to know if it is made of real gold or plated gold. Observe the color of the ring to know if it is made of real gold or plated gold. Calculate the density of the ring to know if it is made of real gold or plated gold. Measure the melting point of the ring to know if it is made of real gold or plated gold. 16 / 20 The relationship between mass and volume is called ----------------- gravity weight density physical property 17 / 20 In the presence of water, iron nail reacts with oxygen in the air to produce a brownish substance called rust. Which statement is TRUE about rusting? Rusting is a chemical change because the identity of the substance doesn't change. Rusting is a chemical change because there is formation of a new substance. Rusting is a physical change because the identity of the substance doesn't change. Rusting is a physical change because there is formation of a new substance. 18 / 20 What is the BEST way to find the volume of the box shown in the next image? using a graduated container using displacement method using a balance using a formula ( l × w × h ) 19 / 20 Which formula is used to calculate the density of an object? density = volume − mass density = volume / mass density = mass / volume density = mass + volume 20 / 20 What are the starting materials in a reaction? coefficient reactants subscript product Your score is 0% Restart quiz Go to the Quizzes Page