Which statement best describes a physical change? O Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the
same
O Changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the
same
O Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the
same
O Changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the
same

Changes can occur to physical properties of a substance, but the chemical compostionof the substance will remain the same

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.